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#monitoring
the dashboards you check before you check anything else.
2 blog posts · 1 TIL.
Blog posts
Deployed a TLS fingerprinting rule that seemed reasonable. Blocked every Chrome 119 user on Windows. The incident report was not fun to write.
A practical guide to setting up Prometheus and Grafana for production monitoring. No theory, just battle-tested configurations that work.
Today I learned
Rotating ciphers exploded our TLS client metrics to 50k unique fingerprints. JA4's split format dropped that to under 200 without losing detection.