First we run a series of small non-interactive JavaScript challenges gathering more signals about the visitor/browser environment. Those challenges include proof-of-work, proof-of-space, probing for web APIs, and various other challenges for detecting browser-quirks and human behavior. Turnstile also includes machine learning models that detect common features of end visitors who were able to pass a challenge before.
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Они в блоге вообще не вдаются в подробности, но может потом будет инфа - как конкретно анализируется браузер и в чем состоит защита от ботов
First we run a series of small non-interactive JavaScript challenges gathering more signals about the visitor/browser environment. Those challenges include proof-of-work, proof-of-space, probing for web APIs, and various other challenges for detecting browser-quirks and human behavior. Turnstile also includes machine learning models that detect common features of end visitors who were able to pass a challenge before.
Магия.
Анализ Fingerprint браузера как один из вариантов. Эмуляция браузера не панацея.