The “10 Concerts” phenomenon has taken over Facebook. Now internet security experts are warning the trend could leave you singing a sad tune. Users write a list of nine concerts they have actually attended, and one that’s a lie. Security experts say that while the posts may seem like fun, it could actually pose a threat to your online privacy. “These ‘fun’ questions have a limited potential for revealing password usage,” says Andrew Richards of Fraud Investigative Services, LLC. Richards is citing the “What was your first concert?” posed as a security question to help identify you on Facebook. The security expert adds answering these questions could open you up to targeted ads based on your age, musical tastes, and more. “When these questions become more viral, users become less sensitive to what they open, and the scammers start adding viruses.” Experts remind users that security questions do not require honesty, just an answer you can remember.