The US Senate's Website has been hacked in the latest embarrassing breach of security against a major US government institution, prompting officials to order a security review.
The US Sergeant-at-Arms Office in Congress confirmed the incident on Monday and ordered a review of all Senate computer sites, Reuters reported on Tuesday.
A loosely organized hacker group known as Lulz Security said it had broken into the Senates public sites “for fun” and posted some files on line.
Lulz Security, which has hacked into the websites of Sony, Nintendo and Fox News, posted online a list of files that appear not to be sensitive but indicate that the hackers had breached the Senate's computer network.
"We don't like the US government very much," LulzSec said at the heading of a statement.
"This is a small, just-for-kicks release of some internal data from Senate.gov -- is this an act of war, gentlemen? Problem?"
Meanwhile, Senate's Deputy Sergeant-at-Arms Martina Bradford said in a statement that "Although this intrusion is inconvenient, it does not compromise the security of the Senate's network, its members or staff."
"Specifically, there is no individual user account information on the server supporting senate.gov that could have been compromised," Bradford added.
According to the US Sergeant-at-Arms Office, the Senate is a frequent target of hacking attacks, with tens of thousands thwarted each month.
The recent cyber attack came after International Monetary Fund (IMF) officials revealed that the agency has been the victim of a string of cyber attacks for several months.
The wave of such hacking efforts coincides with a recent announcement by US officials, seeking to label cyber attacks as an act of war, allowing them to use military force to retaliate against potential perpetrators.
Dr. Karen Kwiatkowski, a former Pentagon official, said in an interview with Press TV earlier this month that the idea was “a pretext designed for an ability to attack without really having a justifiable reason and also a misunderstanding of the nature of the internet.”