Hacker group targets president, A-listers.

A group of hackers known as REvil broke into the server of the law firm where celebrity attorney Alan Grubman toils and has demanded $42 million not to reveal embarrassing information about his clients—the likes of Lady Gaga, Madonna, and Mariah Carey. After the initial contact, the group came back with threats to reveal “dirty laundry” on the president, too.