Two-factor authentication – also known as multifactor authentication – combines a piece of information that you know, such as a password, with something that you have, such as a phone, a code card or ...

Interview with Frank Trezza, who is fairly typical of most hackers. Early pranks sometimes leading to something more serious.

Kevin Mitnick, notorious hacker and author of the book "The Art of Invisibility," explains two easy ways that someone might hack into your phone. Whether it's a jealous spouse, the CIA ...