The Financial Post reports in its Saturday edition that a Lithuanian cybersecurity news outlet says it uncovered a leak of 16 billion passwords that may grant access to Apple, Google, Facebook accounts and more. A Canadian Press dispatch to the Post says that Cybernews warns the data is "a blueprint for mass exploitation" because it could give cybercriminals unprecedented access to information that can be used for account takeovers, identity theft and highly targeted attacks. Cybersecurity experts say the data was probably leaked through infostealers, said Robert Falzon at security software firm Check Point. Infostealers are pieces of malware users are duped into clicking on, which then install something on their computer. The malware can detect when you are logging into an account and can copy whatever you have input to send it to a database of credentials hackers compile. "As a result of that, we end up with these giant repositories on the dark net filled with lists and lists and lists of usernames and passwords and credentials that have been stolen from users all around the world and that are being bought and sold as commodities," Mr. Falzon said. Cybersecurity experts recommend changing your passwords regularly.