Security Guides
Extended support after end of support: what should you ask first?
Extended support buys time, not safety. Ask which flaws qualify, which components are covered, how long it runs and what you do when it ends.
Oct 19, 20264 min read
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Supply Chain Security, in plain English.
Deep dives, practical guides, and incident analyses from engineers who build Safeguard. No fluff, no vendor FUD — just what you need to ship secure software.
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What does Express's trust proxy setting do, and how do you set it safely?
Express trust proxy decides whether req.ip and req.protocol believe X-Forwarded headers. A wrong value lets clients fake their IP and dodge rate limits.
Oct 19, 20263 min read
Security Guides
Does Express show stack traces to users, and what does NODE_ENV change?
Express's default error handler sends the stack trace to the client unless NODE_ENV is production. How to set it, and why a custom handler is still better.
Oct 19, 20263 min read
Security Guides
What is Express's default JSON body size limit, and how to change it?
Express body parsing defaults to a 100kb limit for JSON and form bodies. Learn what a 413 means, when to raise the limit, and how to do it per route.
Oct 19, 20264 min read
Security Guides
What is the exposure window metric in vulnerability management?
The exposure window is the time a vulnerable, reachable component runs in production before the fix ships. Here is how to define, measure and report it.
Oct 19, 20264 min read
Security Guides
Exposure window FAQ: quick answers to the questions teams ask
Short answers on time from advisory to fix to deploy: what to measure, which stage to shrink first, and what to automate. Links to deeper posts here.
Oct 19, 20264 min read
Security Guides
Exploit intelligence terms defined: PoC, in the wild, KEV, EPSS
Plain definitions of proof of concept, exploitable, wormability, in the wild, attempted exploitation, KEV, EPSS, percentile and more, from CISA and FIRST.
Oct 19, 20264 min read
Security Guides
How do you explain reachability analysis to a procurement committee?
Reachability analysis checks whether vulnerable code is actually used. A plain-words script for a board or committee, with an analogy and three questions.
Oct 19, 20264 min read
Security Guides
How do you explain 'known exploited' vulnerabilities to leaders?
A known exploited vulnerability is a flaw attackers are already using. Explain why that outranks a high score and how to phrase the ask to leaders.
Oct 19, 20264 min read
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