Police in Concord, California arrested a teenager earlier this week and charged him 14 felony counts after discovering the high schooler launched a phishing campaign directed at teachers in order to steal their passwords and change grades. From a report: The 16-year-old student, whose name was not released because he's a minor, was arrested Wednesday following an investigation launched by local law enforcement, with assistance from a Contra Costa County task force and the US Secret Service, KTVU reported. Reports of the hack first started to trickle into police two weeks ago, when teachers in the Mount Diablo Unified School District started receiving suspicious emails in their inbox. As it turns out, they were part of a phishing attempt launched by the student. The email messages contained a link that sent the recipients to a fake website constructed by the student to look like the school's portal. If a teacher clicked on the link, they were directed to the site that would prompt them to enter their username and password. The site would record any information entered, allowing the student to hijack the teacher's account.