More than a third (41 per cent) of Facebook users reveal sensitive personal data to a stranger heightening the chances of becoming a victim of identity theft, new research shows.
A random snapshot of users from the social networking site revealed that more than two in five will divulge information, including email address, phone number and date of birth, according to the latest survey by security vendor Sophos.
The test involved creating a spoof Facebook profile before sending out friend requests to individuals chosen at random worldwide. The profile page, named 'Freddi Staur', contained a picture of a small green plastic frog and featured minimal personal information.
More than 200 friend requests were requested to observe how many people would respond, and how much personal information could be gleaned from the recipients.
Nearly three-quarters (72 per cent) of the recipients revealed one or more of their email addresses, 84 per cent listed their full date of birth and 78 per cent named their current address.
"This profile may look like a frog that just wants to be friends, but actually he's just encouraged 82 users to hand over their personal details on a plate," said Graham Cluley, senior technology consultant at Sophos.
"While accepting friend requests is unlikely to result directly in identity theft, it provides cybercriminals with many of the building blocks they need to create fake identities, to gain access to online user accounts, or potentially, to infiltrate their employers' computer networks," he added.
Facebook was launched in 2004 and now has 1.3 million users in the UK and 34 million users worldwide. More than 8.5 million photos are uploaded on to the site each day.