The World Bank's computer network has been hacked into for more than a year, according to Fox News.
Sources inside the bank have confirmed that servers in the bank's highly restricted treasury unit were penetrated with spyware last April, reports Fox News.
At least six major intrusions - two of them using the same group of IP addresses originating from China - have been detected at the World Bank since the summer of 2007. The most recent breach occurred last month.
Fox News has obtained internal World Bank e-mails and memos about the incidents.
According to internal memos, "a minimum of 18 servers have been compromised," including the bank's security and password server and its human resources server.
A server containing contract procurement data is also said to be involved in potential leaks.
However, the World Bank told Fox, "There were attempts to hack the bank's computer systems last summer. But there was no compromise of confidential information."
Before the Fox story was published the FBI is said to have been investigating data breaches at the bank.