Hacking group ShinyHunters claimed responsibility for the breach, saying it had stolen data related to nearly 9,000 schools worldwide. SINGAPORE: Educational institutions in Singapore are assessing the impact of a recent cyberattack that knocked down learning tool Canvas , even as the platform has since been restored. The hacking group ShinyHunters claimed responsibility for the breach, saying in a May 3 post on its website that it had stolen data related to nearly 9,000 schools worldwide that