What lies beneath

From iPods to navigation systems, some of today's hottest gadgets are landing on store shelves with some unwanted extras - pre-installed viruses that steal passwords, open doors for hackers and make computers spew spam.

Recent cases include some of the most widely used tech devices: Apple iPods, digital picture frames and navigation gear.

In most cases, Chinese factories - where many companies have turned to keep prices low - are the source.

The story is too old to be commented.