OC Security Audit - Network Vulnerability Assessment

Network Vulnerability Assessment for Orange County Businesses

Find exposed services, missing patches, weak configurations, risky remote access, and audit evidence gaps before attackers, auditors, or cyber insurance reviews find them for you.

25+Years of IT, cybersecurity, audit, compliance, and infrastructure experience
48Scanner coverage matrix areas preserved for IT, security, and audit teams
SoCalIrvine, Orange County, Los Angeles County, and Southern California focus
RiskPrioritized remediation planning, not just raw scanner output
Executive Summary

A vulnerability assessment should turn technical findings into business decisions.

OC Security Audit helps owners, IT managers, CISOs, CIOs, and compliance leaders understand which weaknesses are exploitable, which systems matter most, and which remediation steps should happen first.

  • Internal and external network vulnerability scanning with professional validation.
  • Review of exposed services, patch levels, firewall posture, identity controls, and remediation evidence.
  • Executive-ready reporting for audit readiness, cyber insurance, compliance, and IT planning.
Vulnerability management readiness assessment dashboard for security risk prioritization
Assessment Coverage

What a complete vulnerability assessment should cover.

The assessment looks beyond a simple scan. It connects scanner results, asset context, business exposure, compliance evidence, and realistic remediation planning.

Network and perimeter exposure

External services, firewall rules, VPN access, NAT exposure, public IP inventory, remote access, and internet-facing systems. Use authenticated and unauthenticated scanning deliberately to distinguish outside-in exposure from internal configuration depth.

Internal systems and patch risk

Servers, endpoints, network devices, operating systems, missing patches, outdated services, weak protocols, and misconfigurations.

Cloud and identity weaknesses

Microsoft 365, Azure, remote access, privileged accounts, MFA posture, security groups, conditional access, and administrative exposure. For containerized environments, connect registry results to deployed assets with the cloud workload and container scanning guide.

Evidence and compliance gaps

Documentation, remediation records, exceptions, owner assignments, and support for PCI DSS, HIPAA, SOC 2, NIST, ISO 27001, and cyber insurance. Establish recurring and event-driven coverage with a documented vulnerability scan frequency schedule.

Why It Matters

The cost of not scanning is hidden risk.

Weaknesses often sit quietly until a ransomware event, audit request, customer security questionnaire, or cyber insurance renewal forces visibility. A professional assessment helps your team find risk early and create evidence that decisions were based on real technical data.

Operational exposure

Unsupported systems, unmanaged ports, stale services, missing logs, and risky remote access can increase downtime and incident response complexity.

Audit exposure

Without evidence, it is difficult to prove that vulnerabilities are tracked, prioritized, remediated, and reviewed by the right owner.

Clarity

Vulnerability scanning vs. assessment vs. risk assessment vs. management.

These terms are often mixed together. The distinction matters when you need useful reporting, remediation ownership, and compliance-ready evidence. The vulnerability scanning versus penetration testing guide explains when automated breadth and human-led validation answer different questions.

ActivityPrimary PurposeBest UseTypical Output
Vulnerability ScanningAutomated detection of known weaknesses, missing patches, open ports, misconfigurations, and exposed services.Recurring technical visibility across networks, systems, cloud assets, and applications.Technical scan results, severity ratings, affected hosts, ports, services, and CVEs where applicable.
Vulnerability AssessmentProfessional analysis of scan results with validation, prioritization, business context, and remediation planning.Reducing technical risk, preparing for audits, and giving IT teams a clear remediation roadmap.Executive summary, technical report, risk-ranked findings, remediation guide, and validation plan.
Risk AssessmentBroader review of threats, vulnerabilities, asset value, likelihood, impact, safeguards, and business consequences.HIPAA risk analysis, cybersecurity governance, board reporting, cyber insurance, and enterprise risk management.Risk register, likelihood and impact ratings, control gaps, treatment plans, and management priorities.
Vulnerability ManagementOngoing lifecycle of asset discovery, scanning, prioritization, remediation, tracking, rescanning, and reporting.Continuous improvement, compliance operations, security governance, and patch accountability.Recurring metrics, remediation tracking, exception management, SLA reporting, and continuous validation.
Process

Structured, safe, and audit-ready from scope to validation.

1. Scope and asset discovery

Define internal, external, cloud, application, and remote access scope so scanning is controlled and meaningful. Applications with authenticated routes, roles, tenants, or business workflows need purpose-built web application and API scanning.

2. Safe scanning and collection

Collect scan results, asset details, screenshots, patch data, firewall context, and evidence without disrupting operations. Before standardizing a platform, use the vulnerability scanner selection guide to test coverage, credential safety, evidence, scale, and operating fit.

3. Validation and prioritization

Separate noise from material risk and rank remediation based on likelihood, impact, exploitability, and business exposure.

4. Reporting and roadmap

Provide executive summary, technical findings, remediation steps, owner guidance, and validation recommendations.

5. Compliance support

Map findings and remediation evidence to PCI DSS, HIPAA, SOC 2, NIST CSF, ISO 27001, and cyber insurance.

6. Rescan and evidence

Support retesting, closure evidence, exception tracking, and continuous vulnerability management planning.

Reporting

Clear reporting for IT teams, executives, auditors, and compliance stakeholders.

Raw scan exports are not enough. OC Security Audit turns technical findings into a prioritized remediation roadmap with business context, evidence guidance, and decision support. Review how to validate scope, authentication, scan health, findings, and closure evidence in a vulnerability scan report.

Executive summary

Risk themes, affected business areas, and management-level priorities.

Technical findings

Hosts, services, vulnerabilities, evidence, severity, and validation context.

Remediation roadmap

Prioritized action plan with owners, timelines, dependencies, and retesting needs.

Audit evidence

Documentation that supports compliance readiness and cyber insurance reviews.

Related Services

Continue strengthening your cybersecurity program.

Network vulnerability assessment often connects to firewall review, internal security audit, cloud security, endpoint security, and remediation planning.

After the Assessment

From findings to implementation support.

OC Security Audit identifies and prioritizes cybersecurity risk. When your team needs hands-on remediation, infrastructure support, Microsoft 365 support, Azure support, endpoint management, backup improvements, or network project delivery, IT Perfection can help implement and operate the related technology work.

Network and data security support for Orange County businesses
Preserved Worksheet

Network Vulnerability Scanner Coverage Matrix

This preserved scanner coverage matrix gives IT, security, engineering, compliance, and audit teams a practical worksheet for scope, evidence, validation, remediation, compliance mapping, and ownership.

Network Vulnerability Scanner Coverage Matrix for IT, Security, Engineering, Compliance, and Audit Teams
Assessment Area Asset / Control Category What the Vulnerability Scanner Should Cover Auditor / Engineer Validation Common Vulnerabilities or Weaknesses Evidence to Review Risk Score Risk Impact Remediation Priority Last Scan Date Last Remediation Date Remediation Owner Current Status Compliance Mapping Recommended Frequency Notes
Security Governance Policies, standards, procedures Confirm that vulnerability scanning, patching, access control, incident response, remote access, firewall review, and exception handling policies exist and are current. Verify policy approval, review dates, ownership, scope, and alignment with actual technical practices. Outdated policies, undocumented exceptions, weak enforcement, missing accountability, inconsistent remediation timelines. Security policies, patch policy, vulnerability management standard, exception register, approval records. High Weak governance can cause inconsistent security practices and audit failures. High To be reviewed To be documented IT Manager / CISO Assessment Needed NIST, ISO 27001, SOC 2, HIPAA, PCI DSS Annual and after major changes Policies should define scanning frequency, severity SLAs, ownership, reporting, and risk acceptance.
Asset Inventory Hardware, software, cloud assets, SaaS, virtual systems Discover all systems in scope, including servers, endpoints, network devices, cloud resources, applications, databases, wireless devices, IoT, and shadow IT. Compare scan discovery against CMDB, MDM, EDR, firewall, DHCP, cloud inventory, and procurement records. Unknown assets, unmanaged devices, duplicate records, missing ownership, unsupported systems. CMDB, device inventory, EDR inventory, cloud inventory, DHCP leases, network discovery reports. Critical Unknown assets cannot be patched, monitored, secured, or audited effectively. Critical To be reviewed To be documented IT Operations Assessment Needed NIST Identify, ISO 27001, CIS Controls, SOC 2 Continuous or monthly Asset inventory is the foundation for accurate vulnerability scanning and remediation.
Network Architecture Network diagrams, topology, segmentation Review network ranges, VLANs, subnets, routing paths, trust zones, critical system placement, guest networks, and segmentation boundaries. Validate network diagrams against firewall rules, switch configurations, routing tables, scan results, and actual traffic paths. Flat network, inaccurate diagrams, poor segmentation, unclear trust boundaries, unauthorized routes. Network diagrams, switch configs, router configs, firewall configs, segmentation test results. High Poor architecture can allow lateral movement and increase breach impact. High To be reviewed To be documented Network Engineer Assessment Needed PCI DSS, HIPAA, NIST, ISO 27001 Annual and after network changes Segmentation should separate users, servers, cardholder data, ePHI, guest Wi-Fi, and management networks.
Firewall Security Perimeter firewall, internal firewall, cloud firewall Scan and review open ports, inbound rules, outbound rules, NAT, management interfaces, VPN exposure, geolocation rules, IDS/IPS, and rule cleanup. Validate rule purpose, business owner, expiration date, least privilege, logging, and blocked unused services. Any-to-any rules, exposed admin interfaces, unused rules, risky services, weak logging, broad outbound access. Firewall rule base, change tickets, traffic logs, IDS/IPS events, external scan reports. Critical Misconfigured firewalls can expose critical systems directly to attackers. Critical To be reviewed To be documented Network Security Engineer Assessment Needed PCI DSS, NIST, ISO 27001, SOC 2 Quarterly and after rule changes Firewall reviews should include both technical scanning and manual rule review.
External Network Scanning Public IPs, internet-facing systems Scan public IP ranges, web servers, VPN portals, remote access systems, mail services, DNS, exposed APIs, SSL/TLS, and open ports. Validate exposed services against business need and confirm critical findings with safe verification. Open RDP, exposed SSH, outdated web services, weak TLS, vulnerable VPN, public database ports. External vulnerability scan, DNS records, SSL reports, firewall NAT rules, public asset inventory. Critical Internet-facing vulnerabilities are often the fastest path to compromise. Critical To be reviewed To be documented Security Engineer Assessment Needed PCI DSS, SOC 2, NIST, ISO 27001 Monthly or quarterly External scans should be repeated after major deployments and firewall changes.
Internal Network Scanning LAN systems, internal servers, endpoints, network devices Scan internal IP ranges for missing patches, weak services, open shares, insecure protocols, unauthorized systems, and lateral movement exposure. Confirm scan coverage with asset inventory and validate high-risk systems manually when appropriate. SMB weaknesses, unsupported OS, vulnerable services, open file shares, weak SNMP, unnecessary ports. Internal scan reports, asset list, AD inventory, EDR inventory, network discovery output. High Internal weaknesses can accelerate ransomware spread and privilege escalation. High To be reviewed To be documented Systems / Security Engineer Assessment Needed NIST, CIS Controls, HIPAA, PCI DSS Monthly or quarterly Credentialed internal scanning provides better visibility than unauthenticated scanning alone.
Routers Routing devices and WAN edge Assess router firmware, routing protocols, ACLs, management access, logging, SNMP, NTP, default credentials, and insecure services. Review configuration backups, firmware level, admin access, secure management protocols, and route control. Outdated firmware, weak SNMP strings, telnet enabled, exposed management, insecure routing changes. Router configs, firmware inventory, admin logs, change records, vulnerability scan results. High Compromised routers can redirect traffic, disrupt operations, or expose sensitive data. High To be reviewed To be documented Network Engineer Assessment Needed NIST, ISO 27001, SOC 2 Quarterly Management access should be restricted to secure admin networks.
Switches Core, distribution, access switches Review switch firmware, VLAN configuration, trunk ports, unused ports, port security, 802.1X, SNMP, logging, and management access. Validate VLAN segmentation, disabled unused ports, secure management, and change control. Open unused ports, weak management, VLAN hopping risk, old firmware, unauthorized devices. Switch configs, NAC reports, port maps, firmware versions, network diagrams. High Switch weaknesses can enable unauthorized access and lateral movement. High To be reviewed To be documented Network Engineer Assessment Needed NIST, CIS Controls, ISO 27001 Quarterly Access switch controls should include port security or NAC where appropriate.
Network Hardware Firmware Firewalls, routers, switches, APs, storage, appliances Identify firmware versions, vendor advisories, unsupported hardware, known CVEs, update history, and patch exceptions. Compare firmware inventory against vendor security bulletins and approved maintenance windows. End-of-life hardware, vulnerable firmware, default services, unavailable patches, undocumented exceptions. Firmware inventory, vendor advisories, maintenance logs, vulnerability reports, lifecycle records. High Firmware vulnerabilities can affect critical infrastructure and may be difficult to detect later. High To be reviewed To be documented Infrastructure Manager Assessment Needed NIST, ISO 27001, SOC 2 Quarterly and after vendor advisories Firmware patching should be included in formal patch management, not handled informally.
DMZ Security Public-facing segmented systems Scan DMZ servers, reverse proxies, load balancers, web services, exposed APIs, management ports, and segmentation from internal networks. Verify DMZ rules, traffic direction, least privilege, logging, and isolation from internal assets. Weak segmentation, broad internal access, exposed management, outdated public services, insufficient logging. DMZ diagram, firewall rules, external and internal scans, server configs, WAF logs. Critical DMZ compromise can become a bridge into internal networks. Critical To be reviewed To be documented Network Security Engineer Assessment Needed PCI DSS, NIST, ISO 27001 Quarterly and after deployments DMZ systems should never have broad unrestricted access into internal networks.
VPN Security Site-to-site VPN, remote user VPN, SSL VPN, IPsec Assess VPN software versions, exposed portals, encryption settings, MFA, split tunneling, user groups, logs, and access restrictions. Validate VPN access is limited, logged, monitored, patched, and protected with MFA. Vulnerable VPN appliances, weak encryption, no MFA, inactive users, excessive network access. VPN configs, user access lists, logs, MFA reports, firewall rules, vulnerability scans. Critical VPN compromise can provide direct access to internal systems. Critical To be reviewed To be documented Network / Security Engineer Assessment Needed NIST, HIPAA, PCI DSS, SOC 2 Monthly or quarterly VPN access should be reviewed frequently due to high exploitation value.
Remote Access RDP, SSH, remote support, privileged remote tools Scan for exposed RDP, SSH, VNC, remote admin tools, remote support software, weak authentication, and internet exposure. Confirm remote access is approved, MFA-protected, logged, restricted by source, and not directly exposed unless justified. Open RDP to internet, shared remote accounts, weak passwords, unmanaged support tools, missing logs. Firewall rules, remote access logs, tool inventory, IAM reports, external scan results. Critical Weak remote access is a common ransomware entry point. Critical To be reviewed To be documented Security Engineer Assessment Needed NIST, HIPAA, PCI DSS, SOC 2 Monthly Remote access should use MFA, least privilege, strong logging, and restricted network paths.
Windows Servers Domain controllers, file servers, application servers Perform credentialed scans for missing patches, insecure services, weak local policies, SMB risks, unsupported OS, and configuration gaps. Validate patch levels, baseline hardening, local admin control, logging, backups, and service exposure. Missing patches, unsupported Windows versions, SMB weaknesses, weak permissions, exposed admin shares. Patch reports, server inventory, scan reports, GPO settings, event logs, baseline reports. Critical Server compromise can impact identity, applications, files, and business operations. Critical To be reviewed To be documented Systems Engineer Assessment Needed NIST, HIPAA, PCI DSS, SOC 2 Monthly Domain controllers require special priority due to identity and privilege impact.
Linux / Unix Servers Linux, Unix, appliances, open-source platforms Scan packages, kernel versions, SSH configuration, sudoers, services, permissions, logging, and exposed daemons. Validate patch management, secure SSH, least privilege, hardening baselines, and log monitoring. Outdated kernel, weak SSH, exposed services, insecure permissions, missing audit logs. Package inventory, vulnerability scan, SSH config, sudoers file, audit logs, hardening checklist. High Linux server vulnerabilities can expose applications, databases, and infrastructure services. High To be reviewed To be documented Systems Engineer Assessment Needed NIST, ISO 27001, SOC 2 Monthly Credentialed Linux scans help detect missing package updates and configuration risks.
Endpoint Security Workstations, laptops, user devices Scan endpoints for missing patches, vulnerable software, local admin rights, encryption status, insecure services, and unmanaged devices. Compare endpoint scan results with EDR, MDM, asset inventory, encryption reports, and patch dashboards. Missing patches, local admin users, unmanaged laptops, unencrypted disks, outdated browsers. EDR console, MDM reports, patch reports, encryption reports, vulnerability scans. High Endpoints are common entry points for malware, credential theft, and ransomware. High To be reviewed To be documented Endpoint / Desktop Team Assessment Needed NIST, HIPAA, SOC 2, ISO 27001 Monthly Endpoint vulnerability data should be integrated with patch and EDR reporting.
Antivirus Traditional antivirus protection Review antivirus deployment coverage, signature updates, policy configuration, exclusions, quarantine events, and unmanaged devices. Validate all active endpoints and servers are protected and reporting current status. Disabled AV, outdated signatures, broad exclusions, unmanaged systems, alert fatigue. Antivirus console, policy settings, exclusion list, quarantine logs, coverage reports. Medium Weak malware protection increases endpoint compromise and ransomware risk. Medium To be reviewed To be documented Endpoint Security Team Assessment Needed NIST, HIPAA, SOC 2 Monthly Antivirus should be reviewed with EDR and endpoint hardening controls.
EDR / XDR Endpoint detection and response Assess EDR deployment, sensor health, policy enforcement, alert coverage, tamper protection, isolation capabilities, and response workflow. Confirm critical systems are onboarded and that alerts are reviewed and escalated. Missing sensors, unhealthy agents, disabled protection, unreviewed alerts, weak response process. EDR console, alert history, device health reports, response playbooks, incident tickets. High Weak EDR coverage reduces detection and response capability during active threats. High To be reviewed To be documented Security Operations Assessment Needed NIST Detect, SOC 2, ISO 27001 Monthly EDR health should be monitored continuously for coverage gaps.
Patch Management Operating systems, applications, firmware, third-party software Scan for missing security patches, unsupported software, vulnerable versions, patch exceptions, and remediation SLA violations. Verify patch deployment process, testing, rollback, business exceptions, and rescan validation. Critical patches missing, unsupported software, delayed remediation, undocumented exceptions. Patch reports, vulnerability reports, exception register, change tickets, rescan results. Critical Unpatched systems are one of the most common paths to compromise. Critical To be reviewed To be documented IT Operations Assessment Needed PCI DSS, HIPAA, NIST, ISO 27001, SOC 2 Monthly and emergency as needed Critical internet-facing vulnerabilities should be handled with accelerated remediation.
Active Directory Domain services, GPO, identity infrastructure Review domain controller patching, weak protocols, privileged groups, stale accounts, delegation, GPO security, and password policies. Validate privileged access, account lifecycle, Kerberos/NTLM exposure, GPO baselines, and audit logging. Excessive domain admins, stale users, weak passwords, insecure legacy protocols, poor delegation. AD reports, GPO exports, privileged group membership, identity logs, vulnerability scans. Critical Identity compromise can lead to enterprise-wide control by attackers. Critical To be reviewed To be documented Identity / Systems Engineer Assessment Needed NIST, HIPAA, PCI DSS, SOC 2 Monthly or quarterly Identity security should be treated as a top-tier vulnerability assessment area.
User Accounts Employees, contractors, service accounts Assess stale accounts, disabled account handling, password policy, MFA status, access rights, shared accounts, and service account exposure. Verify joiner-mover-leaver process and compare HR records to active accounts. Stale users, excessive privileges, shared passwords, weak MFA coverage, orphaned service accounts. User lists, HR termination reports, IAM reports, MFA reports, access review records. High Weak account controls can enable unauthorized access and privilege misuse. High To be reviewed To be documented IT / HR / Security Assessment Needed HIPAA, PCI DSS, SOC 2, ISO 27001 Monthly or quarterly User access reviews should include employees, contractors, vendors, and service accounts.
Privileged Access Admins, root, domain admins, cloud admins Review privileged roles, admin workstations, MFA, PAM controls, emergency access, logging, and separation of duties. Validate least privilege, approval workflow, session monitoring, and periodic access reviews. Too many admins, no MFA, shared admin accounts, unmanaged privileged sessions, weak logging. Privileged group reports, PAM logs, cloud role exports, admin access review records. Critical Privileged account misuse can cause full environment compromise. Critical To be reviewed To be documented CISO / Identity Team Assessment Needed PCI DSS, HIPAA, NIST, ISO 27001, SOC 2 Monthly Privileged access should be tightly controlled and continuously monitored.
MFA Multi-factor authentication Review MFA coverage for VPN, cloud, email, privileged accounts, remote access, administrative tools, and sensitive applications. Validate enforcement policies, exceptions, bypasses, legacy authentication, and conditional access rules. MFA gaps, bypass rules, legacy authentication, SMS-only reliance, weak enrollment process. MFA reports, conditional access policies, VPN settings, cloud identity reports, exception list. Critical Missing MFA significantly increases account takeover risk. Critical To be reviewed To be documented Identity Team Assessment Needed PCI DSS, HIPAA, NIST, SOC 2 Monthly MFA should be enforced for privileged, remote, cloud, and sensitive application access.
Employee Security Awareness Training, phishing awareness, reporting procedures Review training coverage, phishing simulation results, policy acknowledgment, reporting methods, and targeted training for high-risk users. Validate completion rates, training frequency, employee onboarding, and incident reporting awareness. Low training completion, repeated phishing failures, no reporting process, outdated training material. Training records, phishing reports, policy acknowledgments, onboarding checklist, incident reports. Medium Employee mistakes can lead to phishing, malware, credential theft, and data exposure. Medium To be reviewed To be documented Security / HR Assessment Needed HIPAA, SOC 2, ISO 27001, NIST Annual with periodic refreshers Security awareness should be included in cybersecurity audit and risk assessment programs.
Cloud Security Azure, AWS, GCP, Microsoft 365, SaaS platforms Assess IAM, MFA, storage exposure, public access, logging, encryption, security posture, API exposure, workload vulnerabilities, and cloud network controls. Validate cloud configuration against secure baselines, least privilege, and compliance requirements. Public storage, overprivileged accounts, missing logs, weak conditional access, exposed workloads. Cloud security reports, IAM policies, storage settings, activity logs, posture management findings. Critical Cloud misconfiguration can expose sensitive data and business systems quickly. Critical To be reviewed To be documented Cloud Security Engineer Assessment Needed HIPAA, PCI DSS, SOC 2, ISO 27001, NIST Monthly or continuous Cloud environments change quickly and should be monitored continuously where possible.
Microsoft 365 Security Email, Teams, SharePoint, OneDrive, Entra ID Review secure score, MFA, conditional access, legacy authentication, mailbox rules, DLP, sharing, admin roles, and audit logging. Validate configuration against Microsoft 365 security baseline and business data protection needs. Legacy authentication, risky sharing, overprivileged admins, weak audit logging, mailbox forwarding abuse. M365 secure score, audit logs, admin roles, sharing reports, DLP reports, conditional access policies. High M365 weaknesses can expose email, files, identity, and collaboration data. High To be reviewed To be documented M365 Administrator Assessment Needed HIPAA, SOC 2, ISO 27001, NIST Monthly Email and cloud collaboration controls should be reviewed together.
Azure Security Azure subscriptions, Entra ID, resources, storage, networking Scan Azure workloads, NSGs, storage accounts, public IPs, IAM roles, Defender recommendations, encryption, logging, and key vaults. Validate subscriptions, management groups, role assignments, conditional access, and workload exposure. Public storage, overprivileged roles, exposed VMs, weak NSGs, missing Defender coverage. Azure Defender, Azure Policy, role assignments, activity logs, NSG rules, vulnerability findings. High Azure misconfiguration can expose infrastructure, identities, and sensitive data. High To be reviewed To be documented Azure Administrator Assessment Needed NIST, HIPAA, SOC 2, ISO 27001 Monthly or continuous Azure security should include both identity and infrastructure configuration review.
Web Applications Public websites, internal web apps, portals Scan for OWASP Top 10 vulnerabilities, outdated frameworks, authentication flaws, injection, XSS, weak TLS, and insecure headers. Validate scan findings with safe testing and review authentication, authorization, and session management. SQL injection, XSS, broken access control, outdated plugins, weak headers, insecure cookies. Web scan reports, WAF logs, app inventory, code release records, authentication settings. High Application vulnerabilities can expose customer data and business workflows. High To be reviewed To be documented Application / Security Team Assessment Needed PCI DSS, HIPAA, SOC 2, OWASP, NIST Quarterly and after releases Public applications should be scanned after major code, plugin, or infrastructure changes.
APIs Internal APIs, public APIs, third-party integrations Assess authentication, authorization, exposed endpoints, rate limiting, input validation, API keys, secrets, logging, and insecure methods. Validate API inventory, business purpose, data exposure, token handling, and access restrictions. Broken object authorization, exposed tokens, weak rate limiting, excessive data return, insecure APIs. API inventory, API gateway logs, application scan results, integration documentation, secret scan reports. High API weaknesses can expose data and business logic at scale. High To be reviewed To be documented Application Security Team Assessment Needed OWASP API, PCI DSS, HIPAA, SOC 2 Quarterly and after releases API scanning should include authentication and authorization validation.
Databases SQL, NoSQL, data warehouses, sensitive data stores Scan for database vulnerabilities, insecure ports, weak authentication, excessive privileges, missing encryption, insecure backups, and outdated versions. Validate access control, encryption, backup protection, audit logging, and sensitive data exposure. Default accounts, exposed database ports, weak permissions, unencrypted data, outdated engines. Database scan results, access reports, encryption settings, backup logs, audit logs. Critical Database compromise can expose high-value sensitive data. Critical To be reviewed To be documented Database Administrator Assessment Needed HIPAA, PCI DSS, SOC 2, ISO 27001 Monthly or quarterly Databases should not be directly exposed to the internet unless strictly justified and protected.
Email Security Email gateways, Microsoft 365, Google Workspace, filtering Review phishing protection, malware filtering, SPF, DKIM, DMARC, encryption, DLP, mailbox forwarding, and suspicious inbox rules. Validate anti-phishing settings, domain authentication, alert review, and user reporting process. Weak DMARC, mailbox forwarding abuse, phishing bypass, poor DLP coverage, missing alerts. Email security console, DNS records, DMARC reports, DLP reports, mailbox audit logs. High Email compromise can lead to fraud, credential theft, malware, and data loss. High To be reviewed To be documented Email Administrator Assessment Needed HIPAA, SOC 2, ISO 27001, NIST Monthly Email security should be tied to awareness training and incident response.
Wireless Security Corporate Wi-Fi, guest Wi-Fi, access points Assess WPA2/WPA3, guest isolation, rogue AP detection, SSID configuration, authentication, firmware, and wireless segmentation. Validate guest separation, AP inventory, access control, and wireless encryption standards. Weak Wi-Fi passwords, shared keys, rogue APs, guest access to internal systems, outdated AP firmware. Wireless controller reports, AP inventory, SSID configs, rogue AP logs, network diagrams. High Wireless weaknesses can allow unauthorized network access. High To be reviewed To be documented Network Engineer Assessment Needed PCI DSS, HIPAA, NIST, ISO 27001 Quarterly Guest wireless must be isolated from internal business systems.
Network Monitoring SIEM, NDR, IDS/IPS, log monitoring, alerting Review monitoring coverage for firewalls, servers, endpoints, cloud, identity, VPN, applications, and critical security events. Validate log ingestion, retention, alert tuning, escalation, and incident ticket generation. Missing logs, short retention, ignored alerts, poor correlation, no escalation process. SIEM reports, IDS/IPS logs, alert history, log retention policy, incident tickets. High Weak monitoring delays detection and response to attacks. High To be reviewed To be documented Security Operations Assessment Needed PCI DSS, HIPAA, SOC 2, NIST, ISO 27001 Continuous with monthly review Critical logs should be protected from alteration and retained based on compliance needs.
Backup & Disaster Recovery Backups, recovery systems, replication, immutable storage Review backup coverage, backup encryption, offsite copies, immutability, restore testing, access control, and ransomware resilience. Validate recovery tests, RPO/RTO, backup access permissions, and separation from production identity. Untested backups, exposed backup consoles, no immutable copies, weak backup permissions, failed jobs. Backup logs, DR plan, test reports, access lists, retention settings, restore evidence. Critical Weak backups can make ransomware and outages much more damaging. Critical To be reviewed To be documented Infrastructure / DR Owner Assessment Needed HIPAA, SOC 2, ISO 27001, NIST Monthly with periodic restore tests Backup systems should be included in access control and vulnerability reviews.
Incident Response IR plan, playbooks, escalation, forensics readiness Review incident response documentation, ransomware playbooks, contact lists, escalation paths, evidence handling, and tabletop testing. Validate that teams know roles, reporting steps, containment options, and communication procedures. No tested IR plan, unclear ownership, missing contacts, weak evidence handling, slow escalation. IR plan, playbooks, tabletop results, incident tickets, communication templates, lessons learned. High Poor response planning increases downtime, legal exposure, and breach impact. High To be reviewed To be documented CISO / Security Lead Assessment Needed HIPAA, SOC 2, ISO 27001, NIST Annual with tabletop exercises Vulnerability findings should feed incident prevention and response playbooks.
Third-Party Vendors MSPs, SaaS providers, contractors, support vendors Review vendor access, remote tools, contractual security requirements, vendor risk assessments, MFA, logging, and access expiration. Validate vendor access is approved, least privilege, monitored, and removed when no longer needed. Persistent vendor access, unmanaged remote tools, weak contracts, no MFA, unmonitored third-party activity. Vendor list, contracts, risk assessments, access logs, remote support logs, user access reports. High Vendor compromise can create indirect access to business systems and data. High To be reviewed To be documented Vendor Manager / Security Assessment Needed HIPAA, PCI DSS, SOC 2, ISO 27001 Quarterly or annual based on risk Vendor access should be treated as part of identity and remote access risk.
Mobile Devices Smartphones, tablets, BYOD, corporate mobile Review MDM enrollment, encryption, screen lock, OS version, app controls, remote wipe, conditional access, and device compliance. Validate mobile devices accessing email, cloud, and business applications meet security requirements. Unmanaged BYOD, outdated OS, no encryption, no remote wipe, risky apps, weak mobile access controls. MDM reports, device inventory, conditional access reports, mobile compliance policies. Medium Mobile weaknesses can expose email, cloud data, and authentication tokens. Medium To be reviewed To be documented Endpoint / MDM Admin Assessment Needed HIPAA, SOC 2, NIST, ISO 27001 Monthly Mobile access should be linked to identity and conditional access controls.
IoT / OT Devices Cameras, printers, sensors, building systems, specialized devices Discover and assess IoT/OT devices for default passwords, outdated firmware, open services, weak segmentation, and unmanaged access. Validate ownership, network isolation, vendor access, patch feasibility, and monitoring coverage. Default credentials, unsupported firmware, exposed web interfaces, flat network placement, no logs. Device inventory, network scans, firmware versions, vendor documentation, segmentation rules. High IoT and OT devices can create hidden attack paths into business networks. High To be reviewed To be documented Facilities / IT / Security Assessment Needed NIST, ISO 27001, SOC 2 Quarterly IoT systems should be segmented and monitored due to limited patch options.
Certificates & Encryption TLS certificates, encryption protocols, key management Scan for expired certificates, weak ciphers, old TLS versions, self-signed certificates, insecure key lengths, and unencrypted services. Validate certificate ownership, renewal process, trusted CAs, secure protocols, and encryption standards. Expired SSL certificates, TLS 1.0/1.1, weak ciphers, unencrypted services, poor key management. SSL scan reports, certificate inventory, key management records, service configuration reports. Medium Weak encryption can expose credentials and sensitive data in transit. Medium To be reviewed To be documented Security / Systems Engineer Assessment Needed PCI DSS, HIPAA, ISO 27001, SOC 2 Monthly or quarterly Certificate expiration should be monitored proactively.
DNS, DHCP & NTP Core network services Review DNS exposure, zone transfers, DHCP scope security, rogue DHCP risk, NTP configuration, logging, and service patching. Validate authorized DNS/DHCP servers, secure configuration, access restrictions, and monitoring. Open zone transfer, rogue DHCP, weak DNS security, outdated services, incorrect time sync. DNS configs, DHCP logs, NTP settings, scan reports, server inventory. Medium Core network service weaknesses can disrupt operations and support attacks. Medium To be reviewed To be documented Network / Systems Engineer Assessment Needed NIST, ISO 27001, SOC 2 Quarterly Accurate time synchronization is important for logging, investigation, and compliance evidence.
Virtualization VMware, Hyper-V, hypervisors, virtual networks Scan hypervisors, management consoles, virtual switches, templates, snapshots, patches, admin access, and exposed management interfaces. Validate hypervisor patching, restricted management, backup coverage, and segmentation of management networks. Exposed management consoles, old hypervisors, weak admin controls, unmanaged snapshots, poor isolation. Hypervisor reports, patch logs, admin roles, virtual network configs, backup records. High Virtualization compromise can affect many systems at once. High To be reviewed To be documented Infrastructure Engineer Assessment Needed NIST, SOC 2, ISO 27001 Monthly or quarterly Virtualization management should be isolated and strongly authenticated.
Containers Docker, Kubernetes, container registries Scan container images, base images, exposed ports, secrets, Kubernetes API, RBAC, network policies, and registry permissions. Validate image scanning, deployment controls, least privilege, runtime monitoring, and secrets management. Vulnerable images, exposed Kubernetes API, hardcoded secrets, privileged containers, weak RBAC. Image scan reports, cluster configs, RBAC exports, registry logs, deployment manifests. High Container weaknesses can expose applications, secrets, and cloud infrastructure. High To be reviewed To be documented DevOps / Cloud Security Assessment Needed NIST, SOC 2, ISO 27001 Continuous or per release Container scanning should be integrated into CI/CD pipelines.
Secrets Management Passwords, API keys, tokens, certificates, keys Scan repositories, configuration files, scripts, endpoints, cloud resources, and applications for exposed secrets and weak key storage. Validate secrets are stored in approved vaults, rotated, access-controlled, and not hardcoded. Hardcoded passwords, exposed API keys, unrotated secrets, shared credentials, weak vault access. Secret scan reports, vault access logs, code repository scans, key rotation records. Critical Exposed secrets can allow direct unauthorized access to systems and data. Critical To be reviewed To be documented Security / DevOps Assessment Needed NIST, SOC 2, ISO 27001, PCI DSS Continuous or monthly Secrets should never be stored in public repositories, scripts, or shared documents.
Data Loss Prevention DLP, sensitive data handling, classification Assess DLP coverage for email, endpoints, cloud storage, file sharing, removable media, and sensitive data movement. Validate data classification, DLP rules, alert review, exception handling, and response workflow. Sensitive data in public shares, weak DLP policies, ignored alerts, no classification process. DLP reports, classification policies, cloud sharing reports, endpoint DLP events. High Weak DLP can lead to unauthorized disclosure of regulated or confidential data. High To be reviewed To be documented Compliance / Security Assessment Needed HIPAA, PCI DSS, SOC 2, ISO 27001 Quarterly DLP should align with data classification and privacy requirements.
Physical Security Server rooms, network closets, devices, environmental controls Review access controls, visitor logs, camera coverage, server room access, environmental monitoring, and network closet protection. Validate access logs, authorized personnel, badge controls, and physical safeguards for critical equipment. Unlocked closets, poor visitor control, exposed network ports, no environmental alerts, weak access logs. Access logs, visitor logs, CCTV policy, environmental monitoring records, physical security procedures. Medium Physical access can bypass many technical controls. Medium To be reviewed To be documented Facilities / IT Assessment Needed HIPAA, PCI DSS, ISO 27001, SOC 2 Annual or semiannual Physical safeguards should be included in security audit evidence.
Compliance Evidence PCI DSS, HIPAA, SOC 2, ISO 27001, NIST, CMMC Map vulnerability scanning, remediation, patching, access reviews, logging, and risk management evidence to compliance requirements. Validate that evidence is current, complete, repeatable, and tied to actual security controls. Missing evidence, outdated reports, unsupported exceptions, lack of remediation proof, poor audit trail. Audit reports, compliance matrices, scan reports, remediation records, access reviews, risk register. High Weak evidence can lead to audit findings even when controls exist. High To be reviewed To be documented Compliance Manager Assessment Needed PCI DSS, HIPAA, SOC 2, ISO 27001, NIST, CMMC Quarterly and before audits Evidence should show both findings and verified remediation activity.
Risk Register Risk tracking, exceptions, accepted risk Review whether scan findings are transferred into risk tracking, assigned to owners, prioritized, remediated, or formally accepted. Validate risk acceptance approvals, expiration dates, compensating controls, and executive visibility. Untracked findings, expired exceptions, missing owners, accepted risks without controls, poor reporting. Risk register, exception logs, remediation tickets, management reports, acceptance approvals. High Unmanaged vulnerabilities can remain open indefinitely and increase organizational exposure. High To be reviewed To be documented Risk Manager / CISO Assessment Needed NIST, ISO 27001, SOC 2, HIPAA Monthly Risk tracking connects vulnerability scanning to management accountability.
Remediation Tracking Tickets, owners, SLAs, verification Review whether vulnerabilities are assigned, tracked, prioritized, remediated, rescanned, and closed with evidence. Validate remediation dates, closure evidence, SLA compliance, and recurring vulnerabilities. No owner, delayed remediation, repeated findings, false closure, lack of rescan validation. Ticketing system, scan reports, rescan results, patch reports, closure evidence. Critical Finding vulnerabilities without remediation does not reduce risk. Critical To be reviewed To be documented IT Operations / Security Assessment Needed PCI DSS, HIPAA, NIST, SOC 2, ISO 27001 Weekly or monthly Critical and high-risk findings should have defined remediation SLAs.
Continuous Vulnerability Management Ongoing scanning and security improvement Assess recurring scan schedules, asset coverage, remediation workflow, dashboards, executive reporting, risk acceptance, and trend analysis. Validate vulnerability management is continuous, measurable, and tied to business risk reduction. One-time scans only, no trends, no ownership, no SLA tracking, no executive visibility. Vulnerability dashboards, scan schedules, trend reports, remediation metrics, risk reports. High Without an ongoing program, vulnerabilities return and security posture declines. High To be reviewed To be documented CISO / Security Program Owner Assessment Needed NIST, ISO 27001, SOC 2, PCI DSS Continuous Vulnerability management should combine scanning, prioritization, remediation, reporting, and governance.

This matrix is for initial guidance and planning. It does not replace a professional cybersecurity audit, penetration test, compliance assessment, or legal/compliance review.

Ali Hassani, CISO and cybersecurity consultant
Ali Hassani, CISO

Senior-level vulnerability, network security, compliance, and remediation guidance.

Ali Hassani is a CISO and cybersecurity consultant with 25+ years of experience across IT operations, cybersecurity, compliance auditing, Microsoft infrastructure, Microsoft 365 security, network security, firewall security, vulnerability management, cloud security, and infrastructure leadership. His practical background helps organizations connect executive risk, technical controls, and compliance readiness. Learn more about Ali's experience at OC Security Audit's Ali Hassani profile.

Experience25+ years across IT operations, cybersecurity, compliance auditing, network security, Microsoft infrastructure, cloud security, and executive advisory work.
CredentialsCISSP, CCISO, CCNP, CCNA, MCSE, MCSA Security, MCITP, MCP, MCTS
FAQ

Network Vulnerability Assessment FAQ

What is included in a network vulnerability assessment?

A professional assessment usually includes asset discovery, internal and external scanning, review of exposed services, patch and configuration analysis, validation of important findings, risk prioritization, remediation guidance, and reporting suitable for IT leadership and compliance stakeholders.

How is this different from a vulnerability scan?

A scan is usually an automated technical output. An assessment adds professional validation, business context, prioritization, evidence review, compliance mapping, and a remediation roadmap.

Can this support PCI DSS, HIPAA, SOC 2, NIST, ISO 27001, or cyber insurance?

Yes. Vulnerability assessment evidence can support compliance readiness, security governance, cyber insurance questionnaires, and audit preparation. It does not replace legal or compliance advice.

Do you perform remediation?

OC Security Audit can help prioritize and validate remediation. When implementation support is needed, related IT operations work may be supported through IT Perfection, depending on the project scope.

How often should vulnerability assessments be performed?

Many organizations scan monthly or quarterly and perform deeper assessments after major changes, new systems, compliance milestones, cyber insurance renewals, or material security events.

Start with visibility. Finish with a prioritized remediation plan.

OC Security Audit helps Orange County and Southern California organizations identify, validate, prioritize, and document network vulnerabilities before they become business risk.