Yandex outage: Data shows that instead of going dark, malicious bots went on the move
Curated from Cloudflare Blog
If you rely on automated traffic filtering, this analysis is a necessary wake-up call. During the Yandex data center disruption, the immediate assumption was a temporary reduction in malicious activity. The reality, however, was a rapid, coordinated shift in bot infrastructure. This behavior demonstrates that adversaries treat infrastructure availability as a dynamic variable, not a static dependency. For SREs and security teams, this underscores that threat intelligence cannot be siloed by geography or specific vendor outages. You must monitor for sudden, anomalous spikes in traffic from previously quiet ASNs or IP ranges immediately following known regional incidents. The concrete takeaway: update your incident response playbooks to include a "threat migration" check, specifically looking for displaced botnet traffic rerouting through alternative cloud providers or residential proxies when a major regional hub goes offline.
When strikes hit Yandex data centers, many assumed Russian bot operations went dark. Cloudflare data reveals that while search crawling stopped, malicious bots simply migrated to other networks.
— Cloudflare Blog