People.com — Perry was appointed as UNICEF’s Goodwill Ambassador in December 2013 more info

Mercury News, California — Katy Perry victimized by hacker sending Taylor Swift a warm message. more info

USA Today Music — Anthony Gonzalez and his bandmates share their favorites, from David Bowie to Katy Perry.             more info

Chorus.fm — Yesterday Katy Perry, the most followed account on Twitter, got hacked. From TechCrunch: This incident is yet another reminder that despite the platform’s security measures, no one’s Twitter account is safe—especially if they are a celebrity. O... more info

Dlisted — If you’re one of Katy Perry’s 89.1 million Twitter followers (yes, that number is correct), you no doubt saw her tweeting some truly insane shit yesterday. The most insane being a tweet sent to her forever enemy Taylor Swift that wasn’t simply ... more info

Starpulse — Katy Perry has more Twitter followers than anyone else in the world. And all 89 million of them received some unauthorized commentary after the pop star's account was hacked on Memorial Day. more info

Idolator — The hacker also tried to leak a supposed new Katy Perry song. more info

People.com — Katy Perry is the most-followed person on Twitter, with 89 million followers more info

USA Today Music — The hacker also leaked an alleged new Katy Perry song.             more info

MSN Music — The 31-year-old singer's Twitter account was the victim of a hacker over the Memorial Day weekend. more info