UDP flood
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MuddyWater using UDP-based backdoor ‘UDPGangster’ in Turkey, Israel and Azerbaijan campaigns
Fortinet FortiGuard Labs says MuddyWater has been using a UDP-based backdoor named UDPGangster to target users in Turkey, Israel and Azerbaijan via spear-phishing Word documents that rely on macros; the backdoor includes persistence mechanisms and extensive anti-analysis checks before contacting a UDP command-and-control server.
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Cloudflare mitigates 29.7 Tbps DDoS attack linked to AISURU botnet
Cloudflare said it mitigated a 29.7 Tbps DDoS attack linked to the AISURU botnet; the UDP “carpet-bombing” assault lasted 69 seconds, the target was not disclosed, and the company flagged a rise in large, sophisticated attacks in 2025.
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Microsoft: Aisuru botnet launched 15.72 Tbps DDoS attack against Azure
Microsoft said the Aisuru botnet launched a 15.72 Tbps UDP flood against a public Azure IP in Australia from over 500,000 IPs, reaching nearly 3.64 billion packets per second; researchers and firms including Qi’anxin and Cloudflare have linked Aisuru to multiple large-scale DDoS campaigns that exploit vulnerable IoT devices and routers.
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Cloudflare says it blocked largest recorded DDoS attack at 11.5 Tbps
Cloudflare says it blocked the largest recorded volumetric DDoS attack, peaking at 11.5 Tbps and lasting about 35 seconds, with most traffic traced to Google Cloud as the company notes a broader rise in high-volume DDoS campaigns.
