radware
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Sites behind Radware Bot Manager (ShieldSquare) sometimes answer a scraper with an HTTP redirect to validate.perfdrive.com/<id>/?ssc=<original url>, which serves an hCaptcha page with a success status. With httpx.get(..., follow_redirects=True) followed by raise_for_status(), nothing raises; the parser finds no data and the scraper logs at most 'no rows'. Detect it by checking response.url.host == 'validate.perfdrive.com' (or the Radware markers: cdn.perfdrive.com/aperture/aperture.js, _uzdbm vars on the real page) and classify it as blocked (e.g. raise HTTPStatusError with a synthetic 403), not as empty data.
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