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A personal blog and wiki operator explains an error page shown to visitors flagged by anti-crawler defenses that block suspicious or outdated browser User-Agent strings, particularly old Chrome versions widely used by high-volume crawlers (some scraping data for LLM training). The page details known false positives: Inoreader and Feedly feed fetchers mistakenly using fake old-browser User-Agents, Vivaldi users needing to disable Chrome User-Agent brand masking, and archive.today/archive.ph crawlers using suspicious old Chrome UAs and spoofed reverse DNS. Users are advised to use archive.org instead and to contact the site owner if incorrectly blocked.

Source: https://utcc.utoronto.ca/~cks/space/blog/programming/EmacsRectangleRegionNotes. 8 Sync News only summarizes and links out; content copyright belongs to the authors and original sources.