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

NME — ‘Witness’ is supposedly by Perry, according to Romanian hacker. more info

Time — #HackersGonnaHack more info

MTV.co.uk News — Katy Perry is hacked on Twitter with a tweet saying 'miss you', presumably referencing her rumoured falling out with fellow popstar Taylor Swift, all as new music from Katy - a song called Witness... more info

Jam! Showbiz Music, Canada — Katy Perry has fallen victim to an Internet hacker, who took over her Twitter page and leaked an unreleased song. more info

E! Online — Talk about a rough start to the week. As we picture Katy Perry relaxing somewhere wonderful over the Memorial Day weekend, a hacker was apparently hard at work trying to gain access to... more info

The Mirror — The tweets were removed less than 20 minutes after they appeared on the Roar singer's account more info

MTV.co.uk News — Actually in love with this girl... more info

Stereogum — Fresh off the release of their third album Lost Time, goofy Seattle punks Tacocat covered Katy Perry’s “Roar” for The A.V. Club’s Undercover series, which kicked off for another season last week with Eric Bachmann covering David Bowie. Watch ... more info