Jul 5, 2011 08:12 GMT  ·  By

The Swag Security (SwagSec) hacking group has dumped two databases containing the personal details and passwords of over 50,000 Justin Bieber and Amy Winehouse fans.

One of the leaked files contains the names, email addresses, location, gender, telephone number and password of over 5,500 Bieber fans.

The data seems to have been extracted from a website that organized a contest for fans to say why they think the teenage pop star should sing in their city.

From the looks of it, the contest was organized in the United Kingdom because most people used .co.uk email addresses and provided UK zip codes.

Giving the fact that most Justin Bieber fans are minors, the data breach is very serious, as they could be exposed to predators.

All of the affected individuals should immediately change their password on all online accounts where they might have used it in order to avoid abuse.

The Amy Winehouse leak is ten times larger with over 50,000 records inside the dumped database. The information appears to have been stolen from umisic.co.uk, the website of Universal Music UK. Information about other bands is also present in the database.

SwagSec is a group of hackers inspired by LulzSec, the now-defunct hacking outfit that for 50 days kept the Internet in suspense with their daily hacks. However, unlike LulzSec, SwagSec appears focused on the music industry and artists.

Last week, the group defaced the websites of Amy Winehouse and Lauren Pritchard with offensive and racist messages, calling the former a "white devil." In a previous tweet, the group warned that it has password dumps for Lady Gaga, Justin Bieber, Klaxons and Def Jam fans. Only Justin Bieber ones were hit so far, suggesting that more leaks might be coming.