'They'll squash you like a bug': how Silicon Valley keeps a lid on leakers

Working for a tech company may sound like all fun and ping-pong, but behind the facade is a ruthless code of secrecy - and retribution for those who break it

One day last year, John Evans (not his real name) received a message from his manager at Facebook telling him he was in line for a promotion. When they met the following day, she led him down a hallway praising his performance. However, when she opened the door to a meeting room, he came face to face with members of Facebook's secretive "rat-catching" team, led by the company's head of investigations, Sonya Ahuja.

The interrogation was a technicality; they already knew he was guilty of leaking some innocuous information to the press. They had records of a screenshot he'd taken, links he had clicked or hovered over, and they strongly indicated they had accessed chats between him and the journalist, dating back to before he joined the company.