Security Guides
Differential privacy basics for engineers
Differential privacy adds calibrated noise so one person's data barely changes a result. What epsilon means, where it fits, and the common mistakes.
Oct 18, 20263 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 if developers adopt a free AppSec tool before procurement does?
Developers often connect a free scanner to your repos before any review. How to find it, assess the real risk, and bring it into procurement calmly.
Oct 18, 20263 min read
Security Guides
What should developer security training cover in the first month?
Teach what matches your own findings: secrets, dependencies, input handling, access control and tool use. Keep it short, hands on and local.
Oct 18, 20263 min read
Security Guides
/dev/random or /dev/urandom: which should your code read?
On modern Linux read getrandom() or /dev/urandom. The old advice to prefer /dev/random is outdated, except for the early boot caveat. Details inside.
Oct 18, 20263 min read
Security Guides
Dev/prod parity from a security view: same stack, different secrets
Twelve-factor parity says keep dev, staging and production alike. For security that means same services and versions, never shared credentials or data.
Oct 18, 20264 min read
Security Guides
How do you spot credential stuffing in your application logs?
Credential stuffing shows up as many accounts tried from few sources. Learn the log fields, the queries and the signals OWASP lists, plus how to respond.
Oct 18, 20264 min read
Security Guides
How do you detect API key misuse from your API logs?
Log a key ID on every call, never the key, then watch for new sources, new endpoints, bursts and errors. A baseline method with OWASP REST guidance.
Oct 18, 20264 min read
Security Guides
Designing for crypto agility so algorithms can change
Store an algorithm ID and version with every ciphertext, signature and hash, keep crypto behind one interface, and keep an inventory of where it is used.
Oct 18, 20263 min read
Security Guides
Which dependency files to commit for Go, Rust, .NET, PHP, Ruby, Swift?
A one-table answer: the manifest and lockfile each ecosystem needs for a useful scan, from go.mod to Package.resolved, plus where Gradle and Kotlin fit.
Oct 18, 20263 min read
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