With an increasing amount of information being sent through wireless channels, new threats are opening up.

Nigel Deighton, of consultancy firm Gartner, said one reason computer software has been hit hard by hackers is that users often undo a lot of the security measures that systems' administrators put in place. This makes them more vulnerable to viruses.

"Unfortunately in this world, you can have a system administrator who makes a laptop very secure, but that makes it a little bit more difficult to use for the users," he said.

"They go in and they change the parameters, they undo all of the security measures or many of the security measures, that the system administrator put in place."

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