This is more than a intrusive pop up or pop over advertisenment. This a browser hijack. This has happened a couple of times last week, but this time I remembered to get the url's and screen shots. Please Advise. I'm running Windows 10, with Fire Fox 50.1.0

On Sunday 1/22/2017, about 3:20pm, I started at:
http://www.flyertalk.com/forum/delta...-skymiles-665/

Within 10 seconds my browser was hijacked to a survey:
http://munzz.exclusiverewards.swerve...3-4e4e3e1c4387

Using the back arrow brought me back to:
http://www.flyertalk.com/forum/delta...-skymiles-665/

But, within 10 seconds the browser is hijacked to an ad for 'Search Incognito'
https://ext.searchincognito.com/aff/...0-c8d2204ce766


Please advise
_Mych