Chris Anderson has a bloody good idea: Two ethernet cables on his work computer. One to the restrictive office network, one to a DSL line. "These two cables are a handy metaphor for the two worlds of corporate computing: end users and the IT department."

"Some 70% of central government departments do not check that data has been wiped from IT equipment they are disposing of, exposing them to potential security breaches, a ­report released yesterday by the National Audit Office has found."