7 free open-source tools to lock yourself down after the internet's worst security week
alex_verem · x · 2026-10-23
alexverem's "7 free open-source security tools" thread argues that after a week of major internet-wide security incidents, free tools can do the work of a $200/hour security expert. The list covers Strix (AI-agent pentesting, 71k stars), Shannon (AI code-audit pentester, 49k), TruffleHog (leaked-key scanning, 28k), Trivy (vulnerability scanning, 38k), Pi-hole (network-wide DNS blocking, 61k), and Portmaster (per-app firewall, 14k).
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