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Page 14 of the DSE Security Knowledge Hub, with source-backed guidance, checklists, explainers, and playbooks.

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Guidance and analysis from DSE

254 articles
DSE visual briefNetworks & infrastructure

Accept new fiber with both Tier 1 loss evidence and Tier 2 event evidence

Tier 1 OLTS testing proves total insertion loss, length, and polarity against the selected limit. Tier 2 OTDR testing adds event location, loss, and reflectance. Specify both where needed, test correctly, and receive native traces—not just a pass/fail PDF.

Published Reviewed 4 min readBy DSE Security Editorial Team
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DSE visual briefVideo evidence & analytics

Make every security event tell the same time

Camera, recorder, access-control, identity, alarm, and network records become difficult to correlate when clocks disagree. Build a governed time hierarchy, measure offset, alert on drift, and prove behavior through outage and reboot tests.

Published Reviewed 3 min readBy DSE Security Editorial Team
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DSE visual briefNetworks & infrastructure

Onboard connected security devices without lending trust first

NIST SP 1800-36 demonstrates how an IP network and IoT device can establish identity and posture before the device receives operational network credentials—and how that trust can be renewed across its lifecycle.

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

Prove the PoE system at its worst moment

A PoE port that powers a device on the bench does not prove the full switch can support every camera, reader, intercom, heater, illuminator, and edge function during cold start, restart, failover, or power-supply loss.

Published Reviewed 4 min readBy DSE Security Editorial Team
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DSE visual briefCyber defense

Read the U.S. Cyber Trust Mark as a baseline—not a blank check

The FCC’s voluntary U.S. Cyber Trust Mark is designed for qualifying consumer wireless IoT products and a QR-linked registry. It can strengthen procurement evidence, but it is not an enterprise architecture review or a forever-secure guarantee.

Published Reviewed 4 min readBy DSE Security Editorial Team
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DSE visual briefCyber defense

Inventory cryptography before long-lived systems trap it

Post-quantum migration starts with visibility: find where certificates, keys, algorithms, protocols, libraries, firmware, hardware, vendors, data lifetimes, and trust relationships are embedded across IT and physical security.

Published Reviewed 4 min readBy DSE Security Editorial Team
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