Glossary · Detection & reputation
Anti-bot system
A layered defence, network, fingerprint and behaviour checks combined, that sites use to separate automation from real users.
An anti-bot system is the modern successor to a simple IP block. Rather than judge on one signal, it combines many: the address's reputation, the TLS and browser fingerprint, the timing and shape of interactions, whether a challenge is solved like a human. It scores the whole picture and decides in aggregate, which is why beating any single signal is not enough.
The named vendors, the ones sitting in front of a large share of protected sites, all work this way. That is why the honest advice for a hard target is not a magic proxy but coherence: a trusted residential address, a real browser fingerprint, human-paced behaviour, all agreeing, so there is no contradiction for the system to catch.
It is also why, past a certain level of protection, a scraper API that specialises in these systems is often more economical than fighting them yourself, because keeping up with a moving defence is a full-time job.
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