Mirai-powered botnets created by the Mirai malware have been launching distributed denial-of-service attacks at seemingly random targets, a security researcher says. 23 command-and-control servers have been connected with Mirai activity, MalwareTech says. The one responsible for Friday’s internet disruption, affecting dozens of U.S. sites, has been offline since the attack. DDoS mitigation provider Arbor Networks says it’s noticed ongoing DDoS attacks from Mirai across the globe.”]