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Detect AI scrapers with TLS fingerprints, not user agents

7. Mai 2026 | 6 min read

GPTBot, ClaudeBot, and PerplexityBot now spoof Chrome user agents on 30%+ of requests. JA4 TLS fingerprinting catches them at the handshake, before your origin even parses the headers.

Network cables representing TLS handshakes and bot fingerprinting at the edge — Photo by Thomas Jensen on Unsplash

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