Gatekeeper

Insights

Cyber threat intelligence, product updates, and industry insights from the Gatekeeper team

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TLS Fingerprinting: How to Detect Bots Before a Single Byte of JavaScript Loads
Industry InsightsTLS Fingerprinting: How to Detect Bots Before a Single Byte of JavaScript Loads

A deep technical explanation of JA3/JA4 TLS fingerprinting, why it detects automation tools like Puppeteer, Playwright, and Selenium at the transport layer before any HTTP request reaches the server, and its role in layered bot defense.

by GatekeeperDecember 27, 2025
Graduated CAPTCHA Verification: Why the Binary Pass/Fail Era Is Over
Industry InsightsGraduated CAPTCHA Verification: Why the Binary Pass/Fail Era Is Over

A deep dive into continuous risk scoring (0.0-1.0) in modern CAPTCHA systems, how graduated response tiers balance security with user experience, quality-weighted evidence fusion, and per-signal transparency for debugging.

by GatekeeperDecember 21, 2025