This story was originally published on HackerNoon at:
https://hackernoon.com/why-scrapers-fail-headers-sessions-ip-reputation-and-request-patterns.
Web scraping gets blocked by weak headers, broken sessions, poor IP reputation, fast requests, and careless proxy rotation.
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Web scraping gets blocked when traffic looks automated or inconsistent. Weak headers, missing cookies, unstable sessions, poor IP reputation, fast request rates, and careless proxy rotation can all trigger blocks. Reliable scraping depends on consistent request behavior, session-aware routing, controlled pacing, and treating blocks as diagnostic feedback.