Your Facebook friends could be the ticket to your next loan by Kia Kokalitcheva @FortuneMagazine August 4, 2015, 2:00 PM EDT E-mail Tweet Facebook Linkedin Share icons It’s no secret that Facebook FB has been gathering data about its users for years and uses that data to tailor the ads its serves them. One day, it may also use that data to approve — or deny — its users a financial loan. On Tuesday, the social network was granted a patent for authorizing and authenticating a user based on their social network on Facebook, as first spotted by SmartUp Legal. Though the document details multiple applications for the patent, including filtering out SPAM and helping with search queries, it also explicitly states that it could be used to approve a loan based on a user’s social connections: When an individual applies for a loan, the lender examines the credit ratings of members of the individual’s social network who are connected to the individual through authorized nodes. If the average credit rating of these members is at least a minimum credit score, the lender continues to process the loan application. Otherwise, the loan application is rejected. The patent is actually part of the portfolio Facebook purchased from Friendster — arguably the first modern social network — for $40 million in 2010. Friendster’s then-VP of engineering Christopher Lunt is cited as the inventor, and he’s now at health insurance shopping site GetInsured. Though it’s unclear whether Facebook will ever use this patent for that application, as companies often file more than they actually put to use, it could have serious implications for certain people if it does. Using social media data isn’t exactly new — modern consumer lenders such as Affirm already take non-traditional data to estimate credit risk. Implementing this patent could help provide alternative lending, and it could also make it easier for predatory lenders to reach vulnerable people if the method described above is all that’s necessary for the loan. We’ve reached out to both Facebook and Friendster’s founder for more details, and we’ll publish an update if we hear more.