The personal information of millions of students, including those at UBC and SFU, is being held ransom by online hackers. The universities are among the schools that have had private information stolen from the online learning platform Canvas. Canvas estimates its platform is used by 275 million people worldwide including those in post-secondary schools, K-12 schools and other institutions. UBC is telling its students not to log in to the platform and to change their passwords. The breach includes student names, emails, birthdays and financial information. The hackers say they will release the information on May 12 if their demands are not met.