Soo....a problem with a youtube popup.

[gracik]

So I looking at a video on youtube and hit the button to share on facebook. And you know a small popup window shows up? Well when it popped up, and as soon as I started to click it it slowly started to move across the screen to the right and stopped at the edge of screen. So I'm pretty sure it's some sort of virus and plugin issue in firefox developer edition. As it didn't do it in microsoft edge, and it didn't do it when I went into private browsing mode. So any clues as to what's causing it?

 

[ComputerSecurityGuy]

Were you using Flash player or HTML5? If you were using Flash then switch to HTML5. Another week, another Flash zero-day, I expect. But private mode must have restricted it and perhaps Edge had updated Flash.