Just an update: Am convinced Firefox is infected with something, but a scrub and reinstall isn't helping. I receive a daily [http://www.poundsterlinglive.com/data/currencies/gbp-pairs/GBPEUR-exchange-rate exchange rate] alert via email which I would check on most days, and the page typically resolves as normal to indicate the data. It's a page that I trust and I visit it daily. However, yesterday, I noted that the link went to another location PRIOR to the aforementioned URL resolved, which makes me think the journey was jacked before landing at the desired page. (The page I went to was clearly commercial and one I have never visited). It then happened again later in the day with an entirely different journey (I forget the page and email I clicked on). My previous instance of Firefox appeared compromised, so I deleted it and used my antivirus software to completely scrub the existing files. How can it be that the issue remains despite doing a complete scrub and installation? Firefox is my trusted browser and I don't want to move away, but this is a concern.

Try these Firefox help. https://support.mozilla.org/en-US/kb/make-firefox-your-default-browser https://support.mozilla.org/en-US/kb/how-change-your-default-browser-firefox-windows