What the reviewer found
A defensive skill documenting supply-chain attack detection: the flagged curl, base64 -d, credential-path and env-harvesting lines are all inside Sigma detection rules and MITRE ATT&CK tables describing what to watch for, not code the skill runs. Nothing here executes or exfiltrates anything.
example-or-fixture— an example or test fixturedual-use— a security tool that can be misused
What was read
The file as it ships in MHaggis/Security-Detections-MCP:
.claude/skills/supply-chain-analyst/SKILL.md
What the static scan said
The scan flagged 5things. The reviewer kept 0 and dismissed 5 as false.
PE3Reaches for credential files — false positiveSC2Downloads and executes remote code — false positiveEA1Unrestricted tool access — false positiveNETMakes network calls — false positiveSHRuns shell commands — false positive
How this review was made
Sonnet 5 read the files above on 7 September 2026 and answered three questions: is it dangerous to whoever installs it, is each scanner finding real, and what should the installer know. The verdict is bound to the file's hash; when the file changes, it is scanned afresh and reviewed again. A script that changes while the definition does not is not re-reviewed — that is a known gap. How the scan and the review work.