This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Avatar for Username

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

This thread was archived. Please ask a new question if you need help.

My antivirus program is telling me that Mozilla is giving me a trojan every time I open Firefox for the first time. What to do?

  • 1 reply
  • 1 has this problem
  • 1 view
  • Last reply by FredMcD

Soretta
Soretta
more options

Recently, every time I open Firefox for the first time after starting my computer, I get a message from my anti-virus program, Bitdefender, that Mozilla is trying to infect my computer with a Trojan (see file below). Each time I delete it. This has never happened before, and I have not had any trouble with Bitdefender before either. Is there a way to stop this Trojan from recurring?

Thank you?

Recently, every time I open Firefox for the first time after starting my computer, I get a message from my anti-virus program, Bitdefender, that Mozilla is trying to infect my computer with a Trojan (see file below). Each time I delete it. This has never happened before, and I have not had any trouble with Bitdefender before either. Is there a way to stop this Trojan from recurring? Thank you?

All Replies (1)

FredMcD
FredMcD
more options

Soretta said

(see file below)

Please include the file link.

Did you get your Firefox from Mozilla?

You may have ad/mal-ware. Further information can be found in this article; https://support.mozilla.org/en-US/kb/troubleshoot-firefox-issues-caused-malware?cache=no

Run most or all of the listed malware scanners. Each works differently. If one program misses something, another may pick it up.