Verified security briefings, practical guides, and operational playbooks for video, access, IT, identity, networks, and cybersecurity.
Foundational explainers and practical playbooks for common security and technology decisions.
Use the NIST Cybersecurity Framework to organize decisions across governance, protection, detection, response, and recovery.
Open the guide Protect identitiesUnderstand stronger authenticationCompare MFA, passkeys, phishing resistance, and account recovery without treating any one control as a guarantee.
Open the explainer Prepare to recoverTurn backups into tested restorationConnect protected copies, recovery ownership, exercises, and evidence to the services the business actually needs.
Open the checklist Secure connected systemsBuy with the full lifecycle in mindAsk better questions about identity, configuration, updates, support, security state, and end-of-life before deployment.
Open the guideDSE articles identify a primary reference, its publication date when available, and the date our editorial team last reviewed the guidance. Source facts and DSE recommendations are labeled separately.
Every count below is drawn from the governed DSE library.
Avigilon has paused affected ACC and Unity Video upgrades because delayed log cleanup can trigger repeated server crashes. Hold planned upgrades and contact Technical Support immediately for affected sites already upgraded.
Read the briefing
CISA Update A revises critical guidance for Johnson Controls C-CURE 9000 and victor. Review CVE-2026-21655, adjacent-network exposure on port 8999, affected versions, fixed releases, and temporary mitigations.
Read the briefing
A public, read-only knowledge hub where DSE turns selected, source-backed physical security, IT, and cybersecurity developments into practical guidance.
Read the explainer
Broadcast filtering can improve airtime while breaking address assignment or cross-AP discovery if applied blindly.
Read the guide
UniFi PPSK maps passwords to VLANs, but its WPA2 requirement excludes 6 GHz operation.
Read the guide
Quarantine reviewers and notification recipients are not necessarily the same people.
Read the guide
The original-delivery checkbox changes whether the first mailbox still receives mapped messages.
Read the guide
A move between organizational-unit scopes can remain pending until both generated requests are approved.
Read the guide
Recovery may require domain-DNS control and business account evidence when another super administrator is unavailable.
Read the guide
The scheduled enforcement date is not a precise activation time, and new-user grace still allows password-only access.
Read the guide