Lately I've been getting popups on the Facebook app on both my Android phone and tablet. It happens when I click on a story, and I guess it's on Facebook's internal browser, and I'm reading when all of a sudden a page pops up saying the site is not secure, and asking me to click on a link, which I don't do of course. I've ran a virus scan with Bit Defender, which I have on the devices, but it has turned up nothing. Any idea how to get rid of this annoyance?