Firefox Browser Version 32 alerted me to an update which installs a gruesome malware plug-in

Question

As a mac user, I have Firefox browser version 32 (for MacBook) installed on my Macbook Pro for at least a year. I get the browser updated every once in a while when Mozilla alerts me on any new versions releases. Today, I was alerted to an update on my current version 32. As soon as I clicked for update install, I realized that my browser is redirected to the legitimate website of Mozilla Foundation, however, the new update has a definite malware plug-in. I tried it three times, with twice at my own and once during my remote support session with Apple OS Support agent. As a user, I don't get much time on Mozilla website and moments after reaching this website, the URL is redirected to some "Conduit.....com..." with a super long URL that kind of hacks your browser. It leaves several entries in the registry and stops accessing any intended URL. Instead, it takes you to wherever the malware wants. Sometimes you see some malware "App Magic" and the like other unknown yet easily deceptive malware websites. Out of no choice, I finally had to clean my system and uninstall firefox. I am now waiting for Mozilla Firefox to take cognizance of this issue, have it resolved and notify me before I can actually do it. Btw, once I also saw a toll free no. starting with 1-855...... claiming to be Mozilla Support team who are aware of the issue and I should call them for customer support. Out of my high doubts, I did not trust it so never took a note of it any further. Mozilla needs to identify this breach and notify Firefox Mac users of whatever malware breach is occurring due to potentially a breached update version.

Answer 1

If this was a legitimate install from www.mozilla.org or update In Firefox then it did not come from Mozilla or with Firefox. No version of Firefox for Windows, Linux and Mac OSX from www.mozilla.org comes with any form of malware, viruses, adware, toolbars, bundled apps etc.
It would be a first if your claim is true.
You mentioned Conduit, well that is a known adware toolbar extensions company or business or whatever you want to call them though condiit.com seems to have changed to other things now.