As already suggested, I considered the original 2011 Cyber Attacks Timeline graph by Thomson Reuters not enough complete since it did not show some important attacks occurred during this tremendous 2011. This is the reason why I decided to draw an enhanced version which shows, according to my personal opinion (and metric), the list of 2011 major cyber attacks both for size and impact. Moreover in this version I added the cost of the breaches (where possible), and the alleged kind of attack perpetrated.
Somewhat unexpected after 50 days of, apparently unstoppable chaos, the LulzSec Hacker group decided to haul down the flag of war and navigate to calmer shores, in which they will likely not attack other vessels in the sea of Internet.
The alleged dissolution of the group, leading the cyber-attacks at the CIA, U.S. Senate, Nintendo, Sony, SOCA, NATO and others, was announced in a statement, entitled 50 days of lulz in which the group has taken responsibility for the events, reviving the glory days of the AntiSec Movement, while claiming not to be permanently tied to the identity of LulzSec.