One of the most biggest and perhaps the most privacy conscious social networking service on the Internet, Facebook, as per reports, developed a snag that enabled a spammer to post thousands of spam wall posts all across the Facebook walls. This anomaly occurred in the service’s photo upload system, that was later confirmed by Facebook and the company duly notified the users as well.

One of the Facebook users, Andrew Jones spotted the spam attack, when he was alerted to spam post on his wall, which he misinterpreted as a hacking attempt on his account. The victim immediately changed his password for Facebook. He later attributed the snag as a malware concern, as the user had logged on to Facebook via a public computer and was later informed of the glitch in Facebook’s own systems. The spam message tried to entice thousands of Facebook users with a free iPhone link, that would have taken the users to a third party website. There, the users were tricked into filling out survey forms as well sign up for product subscriptions, leading to a flood of unwanted calls on their cell phones. As per Facebook, the snag led to numerous spam postings on wall, against which the company too measures and removed the spam photos as well as informed the affected users.

According to Facebook,

“Earlier this week, we discovered a bug in the code that processes photos as they’re uploaded. This bug caused us not to make the correct checks when determining whether a photo should be posted to a person’s profile. We quickly worked to resolve the issue and fixed it shortly after discovering it. For a short period of time before it was fixed, a single spammer was able to post photos to people’s profiles that they hadn’t approved.”

Via Computer World