Washington - The New York Times is reporting that the National Security Agency has implanted software in nearly 100 000 computers around the world that allows the US to conduct surveillance on those machines.

The Times cites NSA documents, computer experts and US officials in its report about the use of secret technology using radio waves to gain access to computers that other countries have tried to protect from spying or cyberattacks.

The NSA calls the effort an “active defence” and has used the technology to monitor units of the Chinese Army, the Russian military, drug cartels, trade institutions inside the European Union, and sometime US partners against terrorism like Saudi Arabia, India and Pakistan.

The NSA says the technology has not been used in computers in the US.