BBC News - Regin, new computer spyware, discovered by Symantec
▻http://www.bbc.com/news/technology-30171614
Symantec says the bug, named Regin, was probably created by a government and has been used for six years against a range of targets around the world.
Once installed on a computer, it can do things like capture screenshots, steal passwords or recover deleted files.
Experts say computers in Russia, Saudi Arabia and Ireland have been hit most.
It has been used to spy on government organisations, businesses and private individuals, they say.
Researchers say the sophistication of the software indicates that it is a cyber-espionage tool developed by a nation state.
They also said it likely took months, if not years, to develop and its creators have gone to great lengths to cover its tracks.