Reference posts on crawling, anti-bot systems, and the protocols both sides depend on.https://blog.crawlex.net/en-ushttps://blog.crawlex.net/posts/bypassing-queue-it/https://blog.crawlex.net/posts/bypassing-queue-it/What a virtual waiting room actually does, what an HTTP client has to handle to walk through it the way a browser would, and the five layers any client needs to model correctly.Tue, 12 May 2026 00:00:00 GMTanti-botwaiting-roomqueue-itnoreply@truedaniyyel.com (Daniel Adrian)https://blog.crawlex.net/posts/tls-fingerprinting-ja3-to-ja4/https://blog.crawlex.net/posts/tls-fingerprinting-ja3-to-ja4/What a ClientHello actually contains, why JA3 worked for six years and then stopped, and what JA4 fixes, with a Python reference you can run against your own packet captures.Tue, 05 May 2026 00:00:00 GMTtlsfingerprintinganti-botnoreply@truedaniyyel.com (Daniel Adrian)https://blog.crawlex.net/posts/history-of-captcha/https://blog.crawlex.net/posts/history-of-captcha/Twenty-eight years of trying to tell humans from machines, traced through the original patents, papers, and announcements. Distorted text, reCAPTCHA, the checkbox, invisible scoring, signed agents.Thu, 30 Apr 2026 00:00:00 GMTcaptchaanti-bothistoryrecaptchaturnstilenoreply@truedaniyyel.com (Daniel Adrian)