Hackers had 'full functional control' of Nasa computers

Hackers gained "full functional control" of key Nasa computers in 2011, the agency's inspector general has told US lawmakers.

Paul K Martin said hackers took over Jet Propulsion Laboratory (JPL) computers and "compromised the accounts of the most privileged JPL users".

He said the attack, involving Chinese IP addresses, was under investigation.

In a statement, Nasa said it had "made significant progress to protect the agency's IT systems".

Mr Martin's testimony on Nasa's cybersecurity was submitted to the House Committee on Science, Space and Technology's Subcommittee on Investigations and Oversight.