U.S. and European officials say they’ve knocked out a cybercrime group accused of inflicting hundreds of millions of dollars in losses worldwide, putting five key suspects in custody. The European Union police agency said Thursday the sweep was “unprecedented in its scale” and resulted in the seizure of 39 servers and hundreds of thousands of internet domains…

Reports of online disruption cropped up across the East Coast of the United States after a key internet firm was hit by a cyberattack Friday. Manchester, New Hampshire-based Dyn, Inc. said its server infrastructure was hit by a distributed denial-of-service attack, which works by overwhelming targeted machines with junk traffic. Dyn said in a series of…