Key Findings
The number of documented DDoS attacks in the Link11 network rose by 75% in 2025, after a 137% increase the previous year.
Three DDoS attacks surpassed 1 Tbit/s in 2025.
The strongest DDoS attack measured 1.33 Tbit/s and exceeded 120 million packets per second.
Active DDoS attacks were observed 88% of the time, equating to 322 days per year when systems in the Link11 network are targeted.
The longest recorded DDoS attack lasted 12,388 minutes (over eight days) in the Link11 network.
On average, 2.8 follow-up DDoS attacks occured after an initial incident, an 80% increase compared to the previous year.
A coordinated series of DDoS attacks totaled 509 terabytes of data in 2025.
There is greater than a 70% probability that an initial DDoS attack is followed by at least one additional attack.