London, March 14 (RHC)-- U.S. surveillance whistleblower Edward Snowden says American and British spy agencies are expanding a massive program of malware infection. New documents revealed by Snowden show that the program will potentially target millions of computers worldwide.

The massive program of state-sponsored malware infection, which allows spies to eavesdrop, watch targets in some cases, extract data and destroy computers, is run by the U.S. National Security Agency (NSA) and the British Government Communications Headquarters (GCHQ).

The program was previously used secretly to target only a few hundred victims, but now it is being enhanced to be used on a large scale. Snowden says the NSA has developed an automated system code-named TURBINE that allows "the current implant network to scale to large size (millions of implants) by creating a system that does automated control implants by groups instead of individually." The NSA has also established fake Facebook servers, to infect target computers, according to Snowden.

The U.S. and UK governments have come under fire since Snowden revealed how they are spying on the entire world. Snowden, a former NSA contractor, began leaking classified intelligence documents in June last year, revealing the extent of the NSA's spying activities.