Signature format
Exact strings, regex, embedding centroids for fuzzy match. Continuously updated from public + private threat intel.
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Coverage
Catches known attacks. Zero-day novel attacks miss. Combine with ML classifier for coverage.
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False positive control
Signatures tight. Legitimate content shouldn't match. Test on legitimate corpus.
Update pipeline
Threat intel feed → new signatures. Auto-deploy after safety test. Roll back on FP spike.