Some schools and universities whose students’ data was stolen by a cybercriminal hacking group as part of an April breach of the educational tool Canvas have reached out to the hackers to prevent their data from being released, a source familiar with the matter said on Friday. ShinyHunters, a hacking group with a string of data theft and extortion campaigns targeting major global companies, said in a May 3 post on its website that it had stolen roughly 6.65 terabytes of Canvas data related to ne...