A hacking group posted online that nearly 9,000 schools worldwide were affected, with billions of private messages and other records accessed, said a cybersecurity firm threat analyst. A system that thousands of schools and universities use to support instruction was back online on Friday (May 8) after it went down during a cyberattack that created chaos as students tried to study for final exams. The hacking group named ShinyHunters claimed responsibility for the breach at Canvas , said Luke