The providers of the cPanel website management application
are warning some users to immediately change their systems' root or administrative passwords after discovering one of its servers has been hacked.
In an e-mail sent to customers who have filed a cPanel support request in the past six months, members of the company's security team said they recently discovered the compromise of a server used to process support requests.
The cPanel compromise is the latest in a long string of high-profile hacks to be disclosed over the past few weeks. Other companies that have warned users they were hacked include The New York Times, The Wall Street Journal, security firm Bit9 Twitter, Facebook, Apple, and Microsoft.
On Tuesday, a computer firm issued an unusually detailed report linking China's military to hacks against US companies
, although at least some of the most recent attacks are believed to have originated in Eastern Europe.