Security Guides
Does Mosquitto allow anonymous MQTT connections by default?
It depends on version and config. Mosquitto 2.0 and later make you choose authentication, older setups allowed anonymous clients. How to check yours.
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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Does internet exposure change how urgent a vulnerability is?
Yes. A flaw on a service anyone can reach is usually more urgent than the same flaw on an isolated host. Here is how to judge exposure in plain terms.
Oct 19, 20264 min read
Security Guides
Does an import at the top of an Airflow DAG file run code?
Top-level imports in an Airflow DAG file execute whenever the file is parsed, so a new dependency is trusted code on that path. How to review it.
Oct 19, 20264 min read
Security Guides
Does HTTPS protect you on public Wi-Fi? HSTS explained
HTTPS protects page content on public Wi-Fi, and HSTS stops downgrade tricks on repeat visits. Learn what each covers, what they miss, and how to check.
Oct 19, 20264 min read
Security Guides
Does HSTS stop users from clicking through certificate warnings?
Yes, for hosts where the browser holds an HSTS policy. It forces HTTPS and blocks the bypass button. What it does not do, and how to roll it out safely.
Oct 19, 20264 min read
Security Guides
Must GPL source rebuild to the exact same binary hash?
No exact hash is required, but the source must correspond to what you shipped. The GNU FAQ covers timestamps, compilers and how to publish source.
Oct 19, 20264 min read
Security Guides
Does the GPL make you publish your private modifications?
No. The GNU FAQ says you can modify GPL software and use it privately, even inside a company. Release duties start when you distribute it to others.
Oct 19, 20264 min read
Security Guides
Does fuzzing replace dependency scanning? No, they find different bugs
Fuzzing finds unknown crashes in code you can run. Dependency scanning finds known flaws in packages you import. Here is when each one earns its place.
Oct 19, 20263 min read
Security Guides
Does finding more vulnerabilities mean your security got worse?
A rising vulnerability count often means better visibility, not worse security. Here is how to tell discovery from real exposure on a dashboard.
Oct 19, 20264 min read
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