"A diplomatic cable published by WikiLeaks reveals that hackers launched a sophisticated attack against United States climate negotiators about the same time the Climategate hacking of scientists happened last year. The attack, a 'spear phishing' attempt to gain control of Department of State computers, took place in the months before the Copenhagen climate talks of December, 2009. The June 19, 2009, cable warned that these kinds of 'socially engineered' attacks, trying to trick people into running malicious software, were likely to be repeated."
"WikiLeaks: Hackers Tried To Infiltrate U.S. Climate Negotiators"
Source: Think Progress, 12/21/2010