The popular phpBB forum has been taken offline after hackers cracked into its server and defaced its website yesterday. The open source project's website was attacked using a vulnerability in a package called AWStats announced 17 January. The same exploit has also been used to attack several popular weblogs in recent days, Netcraft reports.
phpBB has been a target for attack before. In December 2004 malware authors created a worm that attacked web servers running the popular phpBB discussion forum software to deface vulnerable systems. The Santy worm hit thousands of sites. SOURCE