Bot Blocker Index

Technique taxonomy

Which class of technique addresses which detection layer, and roughly what it costs an attacker. “Proven against” links to vendors we ourselves defeated with that class in our own tests. This is a taxonomy, not an exploit kit — no ready-to-run code.

ClassDefeatsToolingDifficultyProven against (our tests)
Network identityIP-reputation / ASN scoringresidential & mobile proxieslowCloudflare Bot Fight Mode
TLS / HTTP fingerprinthandshake mismatch (JA3/JA4, HTTP/2 frame order)fingerprint-matching clientsmedium
Browser hardeningheadless/automation tells (navigator.webdriver, CDP)hardened Chromium buildsmediumFingerprint (FingerprintJS), Google reCAPTCHA (v3 / Enterprise), Cloudflare Turnstile, hCaptcha
Behavioral simulationbehavioral scoring (mouse, dwell, scroll)input-synthesis frameworkshigh
Challenge handlingthe CAPTCHA layersolver services, human-in-the-loopmedium
Client interrogation replayactive environment probes (Kasada-style)reverse-engineered sensor payloadsvery-high

We publish the taxonomy and the cost curve — which class beats which vendor, and roughly what it costs the attacker — not weaponized, ready-to-run bypasses.