Could a Facebook trend be helping out hackers?
It's a pretty recent trend where people will post a list of 10 concerts. Nine of those are concerts they've been to, and one of them is a lie. Then Facebook friends comment on the post and try to figure out which concert the poster didn't actually go to.
The idea is pretty fun and innocent, but experts are warning people that it could be helping hackers by giving them valuable information.
Security experts tell the New York Times the biggest concern is that it might make it easier for other people to break into your accounts. "What was your first concert?" is a pretty common security question that's used when people reset their passwords.
And if you just publicly listed a bunch of concerts, hackers can simply plug in each artist and potentially access your accounts.
Officials with the National Cyber Security Alliance recommend you pick security questions and answers that are not easily discoverable facts – like your mother's maiden name or high school. Hackers could potentially just look that stuff up.
On a less serious note, advertisers could use the posts to learn more about you and what you like. So if you suddenly see a bunch of advertisements about one of the artists you listed on Facebook, you know why.