Russian cyber-security firm Kasperski exposes more dimensions of global spying by the US National Security Agency, NSA.
The firm has discovered that the NSA has been hiding spying software on hard drives made by top manufacturers including Western Digital and Seagate. That allows the agency to scoop on the majority of the world's computers. The software was part of a group of spying programs found by the Russian firm. Kasperski believes that personal computers in 30 countries have been infected with one or more of the spying applications . It says most of the infections have occurred in Iran, followed by Russia, Pakistan and Afghanistan. The NSA has been under fire since June 2013 when its former contractor Edward Snowden began to leak information about its worldwide scooping activities.