Modern physical access control systems (PACS) now operate on connected IT networks, enabling mobile credentials and real-time management but introducing new cybersecurity risks. Future-ready PACS must embed authentication, encryption, and system integrity into their core design. Strong authentication verifies users and devices with mutual validation, secure boot, and protected firmware. Encryption such as TLS 1.3 and OSDP Secure Channel secures data in transit and at rest, while lifecycle integrity relies on signed updates, SBOM visibility, and CVE monitoring. Applying Zero Trust requires continuous validation of every credential and device, supported by edge-based policy enforcement. Modern systems also provide real-time alerts, anomaly detection, and SIEM integration for unified threat response. Mercury MP Controllers implement these principles with secure boot, encrypted communications, ARM TrustZone isolation, and robust lifecycle security to meet evolving compliance and threat requirements.

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