A week ago, the Office of the National Counterintelligence Executive published a report to Congress concerning the use of cyber espionage to attempt to gain business and industrial secrets from US companies. Easily predictable, the results present a frightening picture!
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.