Mr Hamza, Mysterious Team Bangladesh, and Keynous+ led a massive surge in DDoS on US businesses following an attack on Iran June 28, 2025 02:49 PM Mr. Hamza, a hacktivist group known for its cyberattacks, was responsible for more than half of the claimed attacks in the U.S., while Mysterious Team Bangladesh and Keynous+ each claimed responsibility for over 17%. TechRadar