Noticed how since computer viruses hit the headlines, every time their computer does something unexpected, people start muttering darkly about viruses? Not to worry, it’s far more likely to be a spook taking a look: according to Time magazine, various US spy agencies have entered the computers of the Soviet Union and other nations to look for military and government secrets, and while National Security Agency and the Central Intelligence Agency have looked into introducing viruses into those systems, they have forborn for fear of retaliation.