Once they had control over the certificate, they claimed to have used it to ―obtain User information for thousands of NASA researcher With Emails and Accounts of other users [sic].

If the claims are true, this wouldn’t be the first time the space agency has had security issues. In March, NASA Inspector General Paul K. Martin told the House’s Committee on Science, Space, and Technology’s Subcommittee on Investigations and Oversight, that the agency faces serious challenges when it comes to protecting its information and systems from cyber attacks.

Martin said that NASA was the victim of 47 APT attacks, 13 of which compromised agency systems during FY 2011. In one incident, attackers captured user credentials for more than 150 NASA employees that could have been used to gain unauthorized access to NASA systems.

Source: http://www.securityweek.com/nasa-investigating-possible-ssl-compromise