Security Guides
How to estimate security work in story points
Security tickets feel unestimable because the unknowns are large. Split them into known and unknown parts, estimate the first, timebox the second.
Oct 18, 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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EPSS probability vs percentile: which number should you read?
EPSS gives each CVE a probability and a percentile. See what each means, why 10 percent sits near the 95th percentile, and which one fits your use.
Oct 18, 20263 min read
Security Guides
EPSS, KEV, and CVSS: what an SCA tool should do with each
CVSS rates severity, EPSS estimates exploitation odds, and KEV lists confirmed exploitation. Here is how an SCA tool should combine them, and what to ask.
Oct 18, 20263 min read
Security Guides
Environment variables for secrets: the places they leak
Environment variables are convenient for secrets but readable by every process and easy to dump into logs. See where they leak and what to use instead.
Oct 18, 20263 min read
Security Guides
Envelope encryption explained: data keys and wrapping keys
Envelope encryption uses a data key to encrypt your data and a separate key to encrypt that data key. Here is why teams do it and what it buys you.
Oct 18, 20263 min read
Security Guides
Engineering limits that software cannot override: a defender's guide
Physical limits such as valve gearing and pressure switches still protect a process when the control system is compromised. How to find and add them.
Oct 18, 20264 min read
Security Guides
End of life software in due diligence: how to inventory and plan
Buyers ask which runtimes, frameworks and operating systems are past support. How to find them, rank the risk and present a credible upgrade plan.
Oct 18, 20263 min read
Security Guides
Encryption at rest: disk, database or application level?
Disk, database and application level encryption defend against different threats. A decision guide for choosing by threat model, not by checkbox.
Oct 18, 20263 min read
Security Guides
Encrypted Client Hello explained: what the SNI leaks and how ECH helps
Even TLS 1.3 sends the server name in plaintext. Encrypted Client Hello (RFC 9849) hides it. How it works, its limits and what it means for defenders.
Oct 18, 20263 min read
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