/spandiv style="float:right;width:305px;display:inline;font-size:13px;font-weight:400;font-style:normal;line-height:16px;" img src="http://news.bbcimg.co.uk/media/images/53416000/jpg/_53416285_somehwat-mad-completely-mad-u-mad-madad.jpg" width="304" height="304" alt="Lulz Security man in hat icon"span style="width:304px;"Lulz Security's logo is a cartoon character called Pierre Dubois./span /div div class="story-feature related narrow"Related Stories/div p class="introduction" id="story_continues_1"Hacking group Lulz Security has said it was responsible for taking offline the website of the UK Serious Organised Crime agency (Soca)./p pWww.soca.gov.uk was unavailable on Monday afternoon, with an intermittent service restored later in the day./p pAs the agency launched an investigation, LulzSec tweeted: "Tango down - in the name of #AntiSec"./p pThe group has hit a number of high-profile websites in weeks, including the CIA and US Senate./p pSoca appeared to be the victim of a distributed denial of service (DDoS) attack, where a number of computers, under malicious control, overload their target with web requests./p pA later LulzSec twitter posting seemed to confirm that./p p"DDoS is of course our least powerful and most abundant ammunition. Government hacking is taking place right now behind the scenes," it said./p pOver the weekend, the shadowy group declared that it would begin targeting government systems, calling the campaign Antisec./p pIn an online posting, LulzSec set out its agenda: "Top priority is to steal and leak any classified government information, including e-mail spools and documentation. Prime targets are banks and other high-ranking establishments."/ppThis article is from the a href="http://news.bbc.co.uk" title="Link to BBC News"BBC News website/a. © British Broadcasting Corporation, The BBC is not responsible for the content of external internet sites./p pa href="http://feedads.g.doubleclick.net/~a/Bz46LE3l6Tr5xdOTBkw7APrcut4/0/da"img src="http://feedads.g.doubleclick.net/~a/Bz46LE3l6Tr5xdOTBkw7APrcut4/0/di" border="0" ismap="true"/img/abr/ a href="http://feedads.g.doubleclick.net/~a/Bz46LE3l6Tr5xdOTBkw7APrcut4/1/da"img src="http://feedads.g.doubleclick.net/~a/Bz46LE3l6Tr5xdOTBkw7APrcut4/1/di" border="0" ismap="true"/img/a/pimg src="http://feeds.feedburner.com/~r/BbcNewsTechnologyFullFeed/~4/z4sU0mf2ov4" height="1" width="1"/