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How do I obtain a new version of Mozilla, one free of "malicious" malware?

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My system security warns me of "Maicious Malware" each time I attempt using Mozilla. Each time I upload Mozilla, McAfee warns me there is malicious malware attached. I must then resort to use of an alternative browser. This malware is monitoring both incoming and outgoing connectivity.

My system security warns me of "Maicious Malware" each time I attempt using Mozilla. Each time I upload Mozilla, McAfee warns me there is malicious malware attached. I must then resort to use of an alternative browser. This malware is monitoring both incoming and outgoing connectivity.

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When Firefox is downloaded directly from Mozilla you aren't going to get any Malware 'tagging along for the ride'.

https://www.mozilla.org/en-US/firefox/fx/#desktop or https://www.mozilla.org/en-US/firefox/all/

As far as a McAfee warning like that; I don't trust McAfee to make such judgement.