Why a password is not a security architecture for connected building devices

Short summary

Connected building devices like heating controllers and water monitors need a full security architecture—not just a password screen. The EU Cyber Resilience Act (effective Dec 2027) and UK PSTI regime force engineering teams to address secure boot, OTA updates, provisioning, and vulnerability handling early in development. The author argues cybersecurity planning belongs in the first development gates, not as a late-stage add-on.

• •Connected building devices require security architecture beyond passwords
• •EU Cyber Resilience Act and UK PSTI impose early design-stage security obligations
• •OTA updates, secure boot, and provisioning must be planned before firmware locks in

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