How We Stopped a Tencent-Driven DDoS in Its Tracks

One of our customers has been on the receiving end of a sustained DDoS attack this week. Not from a sophisticated exploit or a criminal botnet, but from aggressive scraping by Tencent’s crawler operating under AS132203.

The attack was generating roughly 20 times the normal number of requests, and it was relentless. In practical terms, that kind of traffic hammers server resources, drives up hosting costs, and can take a perfectly healthy site to its knees.

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