Got Unified Security Yet? The Case for Physical and Logical Security Convergence
Physical and logical security have historically been managed by separate teams with separate budgets and tools. That division is a security gap. Here is why convergence matters and how to approach it.
By Tom Brennan
The adversaries targeting critical infrastructure and financial institutions do not respect the organizational boundary between the physical security team and the IT security team. They use both attack surfaces in coordination. Your defenses need to do the same.
Why Siloed Security Creates Systemic Risk
- Tailgating enables cyber attacks — physical access to server rooms can precede logical compromise. If physical access logs are not feeding your SIEM, you are missing a critical correlation.
- Badge data without context — an employee badging into a facility at 2 AM should trigger a correlated alert if that same account is simultaneously authenticating to VPN from another location.
- Camera systems as cyber attack surfaces — most IP-based physical security systems are IoT devices rarely patched and often on the same network as critical systems.
Practical Convergence Steps
- Inventory all physical security systems and assess their network connectivity and cybersecurity posture.
- Feed physical access logs into your SIEM alongside logical access logs.
- Establish a unified incident response process that triggers both physical and logical investigation protocols.
- Segment physical security systems on isolated network segments with strict access controls.
- Include physical security scenarios in tabletop exercises.
Explore Related Resources