Billion-Dollar Brain (Secret Files)

General Midwinter loves his country, and hates communism. In a bid to destabilize the Soviet power bloc he is running his own intelligence agency, whose “brain” is the world's biggest supercomputer.
With his past coming back to haunt him, the unnamed agent of The Ipcress File is sent to Finland to penetrate Midwinter's spy cell. But then a deadly virus is stolen, and our hero must stop it from falling into the hands of both the Russians and the billionaire madman.