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.
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.
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A public, read-only knowledge hub where DSE turns selected, source-backed physical security, IT, and cybersecurity developments into practical guidance.
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Microsoft has fixed CVE-2026-70329, an Outlook integer-overflow vulnerability rated CVSS 8.8. Exploitation requires a user to open a malicious Office file. Review the exact affected editions, deploy the August 11 security release, and verify the installed build by servicing channel.
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Microsoft reports active exploitation of CVE-2026-68820, a Windows privilege-escalation flaw that can grant SYSTEM access. Inventory affected systems, deploy the applicable August update, and verify the result with evidence.
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Beginning September 1, 2026, Microsoft will start auto-enabling passkeys and registration nudges for SMS- and voice-enabled users in public-cloud Microsoft Entra ID tenants. On February 1, 2027, Microsoft-provided SMS and voice delivery ends; organizations must migrate affected users to a phishing-resistant method or configure a customer-managed telecom provider.
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A Universal Print connector is a live bridge between Microsoft 365 and existing printer queues. Give every connector a supported host, named owner, current software, controlled drivers, monitored capacity, and a tested replacement procedure.
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Azure Arc management depends on software installed on every connected server. Inventory the Connected Machine agent, establish an upgrade path for each operating system, pilot releases, verify reconnection, and resolve version exceptions before support expires.
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Hyper-V Replica provides test, planned, and unplanned failover paths with different prerequisites and consequences. Exercise all three, including network isolation, application validation, reverse replication, failback, and the decision to complete a failover.
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A quorum witness is a deciding vote, not a decorative cluster setting. Select cloud, disk, or file share from the topology; isolate its dependencies from the failures it must resolve; validate access from every node; and retest after cluster or site changes.
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Windows DNS aging can identify stale dynamic records, and scavenging can delete them. Inventory timestamps and registration owners, align intervals with DHCP and client behavior, restrict scavenging servers, pilot one zone, and prove recovery before enabling automation.
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