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Page 179 of the DSE Cybersecurity knowledge center, with source-backed guidance and practical next steps.

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Cybersecurity

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DSE visual briefIdentity & cloud

Move Exchange Online SMTP AUTH clients off Basic authentication with evidence

Microsoft now plans to disable SMTP AUTH Basic authentication by default for existing Exchange Online tenants at the end of December 2026. Find every sender, choose a supported replacement, pilot it, and prove the legacy path is quiet.

Published Reviewed 3 min readBy DSE Security Editorial Team
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DSE visual briefIdentity & cloud

Deploy SMB over QUIC only after identity, port, and fallback testing

SMB over QUIC protects Windows file access with TLS 1.3 over UDP 443, but Windows clients can still prefer TCP and external authentication can fall back to NTLM. Prove transport, identity, certificates, and renewal before production.

Published Reviewed 4 min readBy DSE Security Editorial Team
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DSE visual briefNetworks & infrastructure

Use RPKI route-origin validation without confusing Valid with safe

RPKI lets resource holders authorize which ASN may originate a prefix and lets operators validate BGP origins. It does not validate the full AS path or prove a route is benign. Build careful ROAs, redundant validators, policy, and monitoring.

Published Reviewed 3 min readBy DSE Security Editorial Team
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DSE visual briefContinuity & recovery

Treat Terraform state as production data with locking and recovery

Terraform state binds configuration to real infrastructure and can contain sensitive data. A team needs controlled remote storage, supported locking, restricted access, serialized changes, versioned recovery, and a tested process for failed writes.

Published Reviewed 3 min readBy DSE Security Editorial Team
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DSE visual briefContinuity & recovery

Treat the domain registrar as a business-critical control plane

Control of a domain registration can redirect websites and email, disrupt public services, or remove an organization’s online identity. Registrar access deserves named ownership, strong authentication, locks, monitored changes, and an exercised recovery plan.

Published Reviewed 4 min readBy Gavin Stewart
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