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Cloudflare mitigates record 29.7 Tbps DDoS attack by the AISURU botnet

ID: b4b506b0-6ee4-5a34-9c29-3c96003070b3

STIX ID: report--b4b506b0-6ee4-5a34-9c29-3c96003070b3

Feed Name: Security Affairs

Threat Score
82/100

Date Published: 2025-12-04

Date Updated: 2026-04-22

Author: Pierluigi Paganini

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**Cloudflare mitigated a record 29.7 Tbps DDoS attack by the AISURU botnet.** The 69‑second hyper‑volumetric attack is part of a larger pattern described in Cloudflare's Q3 2025 DDoS Threat Report: AISURU is an estimated 1–4 million‑device botnet conducting frequent attacks above 1 Tbps and 1 Bpps, with 2,867 mitigations in 2025 so far. The botnet has targeted telecommunications, gaming, hosting, finance, AI companies, and others; parts of it are sold as botnets‑for‑hire, enabling large-scale disruption at relatively low cost.

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