[Ron C.]

see this link:

http://www.intego.com/mac-security-blog/cross-platform-adware-poses-as-flash-player-update/

has a bit more info...

[Yosemitest]

I think that's it, and I think it says I'm protected,
and that fake Flash Update is probably where it come from.

[logi_cal869]

“This scam-extension appears to be found on a number of different types of websites, such as adult-themed and file-sharing sites.”

I see...