The BBC reports on a new type of identity fraud, which sees hackers tapping into voice-over IP telephony accounts.

Usernames and passwords from voice-over IP (VoIP) phone accounts are selling online for more than stolen credit cards, Newport Networks has found.

The information allows someone to use the telephone service for free.

Net telephony fraud is still in its infancy, with eavesdropping on calls being the most common security flaw.

But the move into stealing usernames and passwords which are routinely sent across the network when a call is made, is a worrying new trend thinks Dave Gladwin, vice president of products at Newport Networks.

“It is still at an embryonic stage but as voice adoption increases it becomes more of a problem and needs addressing,” said Mr Gladwin.

The details are not sent as plain text but are encoded in such a way as to be “easily captured and unobscured”, said Mr Gladwin.