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Security · Updated 15 Oct, 01:54 am IST

Cloudflare: Yandex outage shifted, not stopped, malicious bot traffic

Image: Cloudflare Blog

Why it matters for readers: If you follow internet news, it explains why apparent outages don't necessarily stop automated malicious behaviour.

  • Reported strikes on Yandex facilities between October 7 and 11 reduced traffic from Yandex’s networks but did not eliminate malicious automation.1
  • Yandex uses two ASNs: AS13238 for its search engine and AS200350 for its cloud services, and they experienced different impacts.1
  • Traffic from Yandex Search (AS13238) decline was mainly due to fewer verified search crawlers indexing content.1
  • Malicious activities seen on Yandex.Cloud (AS200350) declined there but high-volume automation migrated to other hosting providers.1
  • Cloudflare warns that aggregate HTTP traffic metrics can be misleading and behaviour-level analysis is required to understand responsibility for malicious traffic.1

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