Anti-Bot Evasion 2026: Why Your TLS Handshake Is Getting You Flagged (And How to Fix It) (opens in new tab)

Why Your Browser Version Could Be Exposing Your Scraper Before the First Request Modern anti-bot systems no longer rely solely on HTTP headers, JavaScript fingerprints, or IP reputation. Increasingly, detection begins before the first HTTP request is even processed—during the TLS handshake itself. One signal that has become difficult to ignore is the rise of Post-Quantum (PQ) key exchange support in modern browsers. Recently, I ran a series of tests to understand how this affects browser impe...