Update June 29: 2011 Cyber Attacks (and Cyber Costs) Timeline (Updated)
I found this interesting graph from an original Thomson Reuters post, showing the timeline of the major 2011 CyberAttacks.
The graph shows all the main Cyber Events of this tremendous 2011 up to June, the 16th. Actually to be perfect it should include also the infamous Epsilon Data Breach, happened on March, the 30th. Probably it had a major impact on the U.S. rather than in Europe, but it is clear that the aftermaths of this breach will last for years in terms of spear-phishing attacks tarteting the affected users.
Moreover, to be "ultra perfect", it shpould also include the other attacks discovered against U.S. Defense Contractors (L-3 on April, the 6th, and Northrop Grumman on May, the 26th) should be considered as well.
Even if some attacks are missing, the graph is useful (and meaningful) to show the easiness with which our data are at risk.
Of course after June, the 16th, another cyber-attack leading to a breach was perpetrated against Sega (to be added to the list of Game Publisher), affecting 1.3 million users.
Following the Sega Breach, in these last two days, after the #Antisec Manifesto and the consequent teaming between LulzSec and Anonymous, several government sites have been hit by massive DDoS attacks, including SOCA in UK, some sites affiliated to PM Silvio Berlusconi in Italy, and some Government Sites in Brazil.