Facebook Glitch Let Spammer Post To Walls
angry tapir writes "A clever spammer found a glitch in Facebook's photo upload system and used it to post thousands of unwanted Wall messages last week. Facebook confirmed the bug Friday, after notifying affected users of the issue. Most of the messages promised 'Free iPhones,' a common spam message on Facebook these days. Facebook says that the spammer hit thousands of profiles before the company removed the spammy photos and notified affected users. No accounts were compromised as a result of the bug."
Facebook does not share information with advertisers. Facebook's ad system acts as a broker: an advertiser submits an ad, a demographic they wish to see the ad (e.g., gender, age, geographic locale), and a bid. Facebook pairs those ads with users that match the criteria.
I work for Facebook, as an engineer in search.