Transmission - Hari Kunzru

Taking in the USA, India and Britain, the story of a disgruntled employee wreaking havoc ...

When Arjun is fired from his IT job in Redmond, Washington, he unleashes the virus he's been growing on his computer system.
And as his digital creatures make their way out into the world, they begin to have tiny cascading effects on people's lives.
Guy and Gabriella live in a luxury riverside development in London, but soon, through Arjun's unwitting agency, the operation of chance begins to smash up their perfect world.

Everywhere new viruses and worms are being reported, all referring - either through picture, sound, text or code - to the film star Lila Zohar.
Suddenly, Lila is the most famous woman in the world.