Converged Cyber-Physical Security

For twenty years, cybersecurity and physical security reported into different leaders, used different tools, and shared almost no data. That model was already fragile — a contractor’s badge and a contractor’s VPN credential could diverge; an unauthorized server-room entry produced video evidence that was never correlated with the SIEM alert triggered three hours later — but three 2024-2026 shifts made the status quo untenable.

First, AI-powered video analytics matured. Modern cameras detect tailgating, loitering, credential sharing, and anomalous facility entry patterns with accuracy that rivals dedicated security guards — but only if the alerts flow somewhere a security team can act on them. Second, cyber-physical attacks became mainstream: the 2024 ransomware incidents at municipal utilities, food processors, and hospital systems routinely involved physical access (a planted device, a stolen badge, an insider with data center entry) as part of the attack chain. Third, compliance frameworks caught up. NIST 800-53 Rev 5, HIPAA security rule audits, CMMC 2.0, NERC CIP, and state data center regulations now require correlated physical-cyber evidence that simply cannot be produced from two disconnected systems.

A properly converged security program integrates at four layers:

1. Identity & access — the same identity source (Entra ID, Okta, Active Directory) governs both network logon and facility badge credentials. When a termination happens in HR, network and physical access revoke together within minutes, not days.
2. Monitoring & detection — access control events, video analytics alerts, intrusion sensor triggers, and cybersecurity events all flow into a single SIEM (or equivalent correlation platform). Rules look for cross-domain patterns: “badge swipe at server-room door followed within 15 minutes by privileged account login from that workstation”, “after-hours facility entry without matching VPN connection”, or “multiple failed badge reads on a door whose network jack just had a new device connect.”
3. Incident response — a single on-call rotation handles both cyber and physical incidents, with playbooks that explicitly address cross-domain scenarios (a stolen laptop with an intact PIN-protected biometric credential is a very different incident than the same laptop without).
4. Governance & reporting — one executive dashboard, one compliance program, one vendor-management surface. For audit, this produces a single evidence set that satisfies both physical and cyber control requirements.

Armorstack is structured to make convergence the default, not an integration project. Our SENTRY portfolio runs the 24/7 SOC, SIEM, endpoint, identity, and cloud security stack. Our CITADEL portfolio designs, installs, and monitors access control, video surveillance with AI analytics, intrusion detection, and low-voltage infrastructure. The two portfolios share a single engineering leadership team, a single monitoring platform (the same SOC analysts see both cyber events and facility events), and a single customer-facing account team. There is no hand-off between “cyber vendor” and “physical vendor” because there is only one vendor.

A typical converged engagement begins with a joint cyber-physical risk assessment that maps current state, identifies the top 10 correlated exposures (things neither a pure cyber audit nor a pure physical audit would catch independently), and produces a 6-12 month implementation roadmap. Implementation is phased: identity integration first, monitoring platform integration second, incident response consolidation third, then iterative improvement to correlation rules and video analytics tuning.

Scenarios we routinely detect and stop that a segregated program would miss:

• Insider exfiltration — employee badges into a wiring closet after hours, plugs in an unknown device (network sensor detects new MAC), and begins lateral movement (SIEM detects privileged account use). In a segregated program, each of those events is low-severity individually. Correlated, it’s a same-day escalation.
• Social engineering at the door — a visitor claims to be an IT contractor, video analytics flags tailgating behind an employee entering a secure area, and no corresponding IT ticket exists. The cyber-physical SOC catches this in real time; a segregated program notices next month during badge audit reconciliation.
• Stolen credentials + facility mapping — a credential-theft campaign targeting a hospital’s Epic admins correlates with reconnaissance of public-facing facility information. Converged monitoring escalates both as a single campaign; segregated teams see two unrelated reports.
• Executive impersonation + physical breach — a BEC campaign against the CFO correlates with an unauthorized delivery attempt at the executive floor. The SOC escalates to physical security to adjust access controls before the social engineering reaches the building.

Frameworks where converged cyber-physical controls are explicitly required or strongly implied:

• HIPAA Security Rule (164.310 Physical Safeguards + 164.312 Technical Safeguards) — auditors increasingly expect correlated evidence that physical access aligns with authorized electronic access.
• CMMC 2.0 Level 2 — NIST 800-171 controls PE-1 through PE-18 (physical protection) plus AC-family (access control) require coordinated evidence.
• NIST 800-53 Rev 5 — used by federal contractors and increasingly adopted by state agencies. PE (Physical and Environmental Protection) controls assume integration with access control and incident response families.
• NERC CIP (electric utility) — CIP-006 physical security and CIP-007 systems security are inherently cross-domain.
• PCI-DSS v4.0 — requirement 9 (physical access) has been strengthened; correlation with requirement 10 (logging and monitoring) is now examiner expectation.
• SOC 2 Type II — physical-security trust service criteria and logical-security criteria increasingly produce evidence from the same management system.

The most effective starting point for mid-market organizations is a 6-week converged risk assessment. Armorstack engineers and CITADEL physical security specialists walk the facility together, review current identity and access control architecture, review current SIEM and monitoring coverage, and produce a joint report identifying the 10-15 highest-impact converged improvements ranked by implementation effort and risk reduction. For most mid-market clients, the initial findings include identity integration between HR, IT, and physical access (typically the highest-ROI improvement), video analytics deployment for 3-6 highest-risk locations, and SIEM integration of access control event streams. The full roadmap typically spans 9-15 months and fits within existing IT and security budgets when the savings from vendor consolidation and insurance premium reductions are factored in.