In the last 31 years since Linux was first announced a lot has changed, not least of which has been our attitude and approach to computer security. As our technology has grown in complexity and the cat-and-mouse game between attackers and defenders goes on, the domain knowledge required to exploit these systems has continued to grow. With new exploitation techniques building on previous ones, and as mitigations respond to these trends, it can be hard to keep track; let alone look ahead. In this talk, Sam hopes to make this task a little easier, opening up the world of Linux kernel exploitation. Borrowing from Charles Dickens’ “A Christmas Carol”, join in on a journey of Tux’s Security Past, Present & Future.