Jun 25, 2011 11:36 GMT  ·  By

A group of hackers called TeaMp0isoN has leaked personal information about former British Prime Minister Tony Blair, as well as his friends and co-workers.

According to the hackers, the information was obtained back in December 2010 from a hacked webmail server that Blair used.

The leaked data includes names, home addresses, phone numbers, and emails addresses of Blair office members, as well as people in his address book, including family, friends and other politicians. The curriculum vitae of Blair's special adviser Katie Kay was also published.

On their Twitter feed, TeaMp0isoN wrote that "Tony Blair is a war criminal, he should be locked up." The group is known to be driven by political motives and believed to be anti-US, anti-Israel and anti-India.

In the past its members have worked with the Pakistan Cyber Army and Mujahideen Hacking Unit to attack and deface US government and military websites.

The group is currently trying to expose the identities of LulzSec members. Their main beef with the group that has been wreaking havoc online for the past few weeks is apparently their lack of skill.

"Stop telling yourself that u are hackers, putting a ip into a irc is NOT hacking nor is using pre-made tools and scripts to grab databases…you do not represent the anti-sec movement, u are not allowed to greet underground groups like zf0, ab, h0n0, el8," TeaMp0isoN wrote to LulzSec.

The nature of the vulnerability exploited to break into the webmail server is not known, but there's a strong possibility that the compromise was the result of outdated software. "It is extremely important to keep web servers patched and up to date, especially if they are running Linux using commonly exploited CMSs, webmail solutions and blogging software," says Sophos senior security advisor Chester Wisniewski.