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Security Guides

Free EPA cybersecurity assessment for water utilities: what to expect

EPA offers drinking water and wastewater utilities a free cybersecurity evaluation. Who can ask, what you get, and how to prepare before assessors arrive.

Oct 18, 20263 min read
Security Guides

frame-ancestors vs X-Frame-Options: which header stops framing

Both headers limit who can embed your page. frame-ancestors is the modern, more precise one. Here is how they differ and what to send for clickjacking defense.

Oct 18, 20263 min read
Security Guides

Risk treatment options: reduce, avoid, share or accept

Every rated risk needs a response. Learn what reduce, avoid, share and accept mean, how to choose between them, and what to write down for the decision.

Oct 18, 20263 min read
Security Guides

Mitigate, eliminate, transfer or accept: choosing a response

Every threat needs one of four responses: mitigate, eliminate, transfer or accept. Here is what each means, when to choose it and how to record it.

Oct 18, 20263 min read
Security Guides

The four patching scenarios: routine, emergency, mitigation, unpatchable

NIST SP 800-40 Rev 4 splits patching into four scenarios. Here is what each one means and how to decide which one a new vulnerability falls into.

Oct 18, 20264 min read
Security Guides

Forward secrecy explained: why a stolen key cannot open old traffic

Forward secrecy means a stolen server key cannot decrypt past TLS sessions. Learn how it works, how TLS 1.3 enforces it and where it still leaks.

Oct 18, 20263 min read
Security Guides

Flying a drone over people and moving vehicles: 107.39 and 107.145

Part 107 bans flying over people unless one of three exceptions applies. Moving vehicles have their own rule in 107.145 with category conditions.

Oct 18, 20263 min read
Security Guides

Do not exclude testers from security logs; flag them instead

Excluding pen testers, internal scanners or staff from logging hides real attacks. Tag known actors instead so alerts can be filtered but evidence stays.

Oct 18, 20263 min read
Security Guides

Fixed version or backported fix: how to judge a patch

A scanner says upgrade, but your vendor says the fix is already in. How backports work and how to confirm which of them is right for your build.

Oct 18, 20263 min read

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