Police in Arizona, the CIA, Sony, the U.S. Senate, Nintendo, PBS television, the Fox television network, the porn site Pron. com, the X Factor, the British police, the video game publisher Bethesda ... The list of victims of computer attacks claimed by Lulz Security, a group of hackers, is long. Most importantly, all of these attacks took place within a very short: there are still unknown two months, "Lulzsec" - "lulz" is a corruption of the acronym for "laugh out loud" - has cut in a few weeks an international reputation.