Paris Hilton's Hack Attack

If you didn't already think the life of Paris Hilton was a cautionary tale, consider the events of last week. A hacker swiped revealing photos and celebrity phone numbers from the reality-TV star's mobile phone and posted them on the Web, forcing Hilton to apologize to friends and family for the invasion of privacy, and offering the rest of us a valuable lesson: your mobile phone is more vulnerable than you ever realized. "What you have in your hand is a small, powerful computer connected to a public network," says Aloysius Cheang of the Singapore-based information-security nonprofit SIG^2. The latest generation...