2025 Q4 DDoS threat report: A record-setting 31.4 Tbps attack caps a year of massive DDoS assaults

Cloudflare's Q4 2025 DDoS Threat Report documents a record-breaking 31.4 Tbps attack and a year of unprecedented DDoS escalation.

• •DDoS attacks surged 121% in 2025, totaling 47.1 million attacks with an average of 5,376 mitigated per hour
• •The Aisuru-Kimwolf botnet, comprised of 1-4 million infected Android TVs, launched "The Night Before Christmas" campaign with peaks of 205 Mrps, 9 Bpps, and 24 Tbps
• •Network-layer DDoS attacks more than tripled year-over-year, reaching 34.4 million in 2025 vs 11.4 million in 2024
• •Hyper-volumetric attack sizes grew over 700% compared to late 2024, with the record 31.4 Tbps attack lasting only 35 seconds
• •Telecommunications was the most-attacked industry; the UK surged 36 places to become the 6th most-attacked location