As fast as detectives delete one website selling your stolen credit card details, another pops up. How do police track these online identity thieves?
Sixteen storeys up in an anonymous London tower, the people inside this office aren't admiring the view of the capital's financial heart.
They're hunkered down over laptops, delving link-by-link into another world - the e-crime that attacks the bricks and mortar of Britain's finances.
"Paul" is a field agent with the Serious Organised Crime Agency (Soca), the secretive national policing department that's often dubbed Britain's FBI. But the doors Paul tries to smash through are not bolted from the inside.
The doors that interest him are virtual gateways to international rackets plotting to steal your financial identity. No stab vests and baseball caps - just a lot of mouse clicks. It's like that fairground game Whack-A-Mole. As fast as they hit one target, another replaces it.
"Quite simply, organised criminals are able to get at data on machines where there's been no attempt made to secure the PC and prevent an attack," says Paul...more