The fire LulzSec has set for fun may be unextinguishable, in the midst of the fueling tension for a serious cyber war.

Infamous for a series of high-profile hacks on Sony, Nintendo, the PBS, FBI affiliates, LulzSec claimed on Wednesday its responsibility for hacking the website for the U.S. Central Intelligence Agency.

Tango Down - cia.gov - for the lulz, the group tweeted at around 6 p.m., June 15.

Shortly after the Twitter message, the CIA's website would not load or was slow to load for at least a few minutes. We are looking into reports the service is down, said a CIA spokesman, Fox News reported.

The hacker group was apparently offended by a Twitter user @Quandrapodacone, who challenged LulzSec to hack fbi.gov or cia.gov, saying a DDoS attack on small targets was eassy and not really hacking, Michael Santo of Examiner stated. While LulzSec has indeed taken down cia.gov, @Quadrapodacone isn't impressed by it. Anyone can create a botnet and use the LOIC (Low Orbit Ion Cannon) or some similar tool to DDoS a site, according to Santo. LulzSec may not be done with it.

Over the weekend, a portion of the Senate website was hacked, and the same website was targeted again on Wednesday. LulzSec was unable to access proprietary data due to a firewall, the Senate acknowledged today.

They're getting nothing, but the attacks continue, Martina Bradford, the deputy Senate sergeant at arms told Reuters. We've been able to stay ahead of the hackers and keep them out of the main Senate network.

LulzSec said on its website Monday, We don't like the U.S. government very much. Their sites aren't very secure. It was added, In an attempt to help them fix their issues ... this is a small, just-for-kicks release of some internal data from Senate.gov. Is this an act of war, gentlemen? Problem?

LulzSec has opened a call-in number to accept requests for the next hacking target, and the number is now reportedly forwarded to the customer support lines of various businesses, including magnets.com and World of Warcraft.

The New York Times has once defined lulz as the joy of disrupting another's emotional equilibrium.

The hacker group tweeted an hour ago, Lulz Security, where the entertainment is always at your expense, whether you realize it or not. Wrecking your infrastructures since 2011.

Its Twitter followers have swelled to nearly 160,000.

The New York Times Sony New York Fbi