The U.S. Justice Department, working with Canadian and German authorities, has successfully dismantled the online infrastructure behind four major botnets that compromised more than three million Internet of Things devices including routers and web cameras. The botnets were identified as Aisuru, Kimwolf, JackSkid and Mossad.

According to federal authorities, these four botnets were responsible for conducting a series of recent record-breaking distributed denial-of-service attacks with the capability to knock nearly any target offline. The scale of the compromise demonstrates the significant threat posed by unsecured IoT devices in modern cyberattacks.