The finance ministry of France has been subject to a large cyberattack during which documents related to the G20 were targeted, according to revelations in the magazine Paris Match.
The hack, though it's being described as the largest ever on a French ministry, was actually quite targeted. Only 150 of the ministry's 170,000 computers were subject to the attack. They were all used for G20 planning. The chairmanship for the group of the world's most powerful countries rotates between countries, and in 2011, France is heading things. The precise nature of the documents that were stolen is unclear, but were related to "international finance and world trade."
No one knows who perpetrated the attack, but we know how it happened. Employees at the ministry were sent e-mails with attachments that contained a trojan horse. You would think people would learn.