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Security Guides

Threat model, vulnerability scan or pentest: which comes first?

Three security tests answer three different questions. Use a threat model at design, scans during build, and a pentest before release or at intervals.

Oct 18, 20264 min read
Security Guides

A threat model checklist for a connected robot or vehicle

A practical checklist for threat modeling a connected robot, drone or vehicle: entry points, trust boundaries, updates, backend and safe failure.

Oct 18, 20264 min read
Security Guides

Threat information sharing for small security teams

A small team can take part in threat information sharing without a big program. Steps drawn from NIST SP 800-150 for goals, scope, rules and communities.

Oct 18, 20263 min read
Security Guides

Therac-25: how a software bug became a radiation overdose

What went wrong with the Therac-25 radiation machine, why software replaced hardware interlocks, and what software teams still take from the case today.

Oct 18, 20264 min read
Security Guides

How to test whether an SCA tool sees transitive dependencies

Most vulnerable packages arrive indirectly. A short test checks whether an SCA tool finds transitive dependencies and shows the path that pulled them in.

Oct 18, 20263 min read
Security Guides

How to test an SCA vendor's reachability claims

Reachability analysis should cut noise without hiding real risk. Use a seeded test with known vulnerable calls to check any vendor's claim before you buy.

Oct 18, 20263 min read
Security Guides

How to test a vendor's reachability claims in a proof of concept

Reachability analysis should cut noise without hiding risk. Plant known cases in a pilot repo and check what each tool marks reachable or unreachable.

Oct 18, 20263 min read
Security Guides

How to test a SAST tool with bugs you plant yourself

Plant a handful of known flaws in a branch, scan it, and see what a static analysis tool catches. A practical test, plus what it can and cannot prove.

Oct 18, 20263 min read
Security Guides

Are Terraform workspaces a security boundary between environments?

Terraform CLI workspaces share one backend and one set of credentials, so they are not an isolation boundary. How to separate prod from dev properly.

Oct 18, 20263 min read

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