August 2025 marked a significant escalation in DDoS activity, with the DigiCert UltraDDoS Protect platform detecting 5,333 DDoS attacks, representing a 50.39% increase compared to July 2025. Among these, DigiCert observed the largest DDoS attack ever recorded on its platform, peaking at 3.7 Tbps with over 336 million packets per second (Mpps). To better track these extreme-scale threats, a new classification, known as “tsunami” DDoS attacks, has been introduced for events exceeding 1 Tbps. The scale and complexity of these attacks reflect a broader trend we first identified last month — malicious actors have successfully reconstituted and expanded their DDoS infrastructure following significant law enforcement takedown operations in late 2024 and early 2025, restoring and even exceeding their previous operational capabilities.
Stats at a Glance
- Total Number of Attacks: 5,333 (a 50.39% increase compared to July 2025)
- Total number of hours of downtime avoided: ~ 1,603 Hours (a 17.22% increase compared to July 2025)
- Number of Mega Attacks (100+ Gbps): 11 (a 37.50% increase compared to July 2025)
- Largest DDoS Attack (Gbps): 3.7 Tbps (a 54.17% increase compared to July 2025)
- Largest DDoS Attack (million packets-per-second): 336 Mpps
- Longest DDoS Attack: 1.5 Days
- Average DDoS Attack (Gbps): 2.01 Gbps
- Median DDoS Attacks (Gbps): 0.39 Gbps (a 34.48% increase compared to July 2025)
- Average DDoS Attack (packets-per-second): 264.09 Kpps (a 0.91% increase compared to July 2025
- Median DDoS Attack (packets –per second): 38.67 Kpps
Average Duration: 18.04minutes - Median Duration: 8.88 minutes (a 31.56% increase compared to July 2025)
- Unique vs Carpet Bombing: 35.18% Unique / 64.82% Carpet Bombing
- Top Three Industry Targeted: Software/Web Services (68.47%), Financial Services (17.48%), Education (8.07%)
