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The Rise of Packet Rate Attacks: When Core Routers Turn Evil

A sharp increase of DDoS attacks have been observed since the beginning of 2023. A new trend is to send high packet rate attacks though. This article introduces the findings of our teams in order to bring new insights regarding this threat.

Moreover, starting from November of the same year, a significant acceleration of the trend has been observed by our teams at OVHcloud: while DDoS reaching 1 Tbps or above were occasional, they aren’t anymore. At this point, it remains possible this traffic is generated either by servers located behind a router configured with NAT, using spoofed IP, or leveraging some kind of weird TCP reflection. Moreover, generating traffic using the hardware of a compromised device is far from trivial: an intruder will most likely attempt to leverage CPU capabilities only or built-in features whose use has been slightly diverted from their intended usage.

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