Cyberattack shutters Canvas learning platform for schools across the U.S.

A system that thousands of schools and universities use was offline Thursday due to a cyberattack, creating chaos as students tried to study for finals and underscoring education's dependence on technology. The hacking group named ShinyHunters claimed responsibility for the breach at Instructure, the company behind the learning management system Canvas, said Luke Connolly, a threat analyst at the cybersecurity firm Emisoft. CBS News has reached out to Instructure for comment. …