Facebook said on Wednesday that it fixed a hole that exposed the birth dates of members during a public beta of a new design for profile pages earlier this week.
Security company Sophos alerted Facebook to the problem and is suggesting that Facebook users input fake birth dates instead of real ones to prevent any similar problems going forward because of the risks from identity fraud.
"My advice to Facebook users would be, even if your data of birth is set to be non-visible, change it to a made-up date in case this kind of blunder happens again," Graham Cluley, senior technology consultant at Sophos, said in a statement. "Facebook and other social-networking Web sites need to be more careful about protecting their members' data, or risk losing users."
A Facebook representative released this statement in response: "For a brief period of time, a small number of users were able to access a private beta of Facebook's new site design meant only for developers. During that time, some of those users had their birthdays revealed due to a bug. The problem was identified and promptly resolved."
Cluley goes into more detail on his company's blog.
And here's a YouTube video that illustrates the problem:
Facebook is scheduled to roll out the new profile page design to users this week.
In an identity theft-related study done last year, Sophos found that 41 percent of Facebook users, or more than two in five, were willing to reveal personal information to a complete stranger.
, the company suspended the Top Friends app after it was learned that the app was revealing profile data that users wanted to keep private.