Join the AMA (Ask Me Anything) with the Firefox leadership team to celebrate Firefox 20th anniversary and discuss Firefox’s future on Mozilla Connect. Mark your calendar on Thursday, November 14, 18:00 - 20:00 UTC!

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.

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

Does Firefox 5.0 have a security update?

more options

I am receiving a Pop-Up requesting that I do a security update. I understand that there is a virus that attacks Firefox, so I want to be sure this is legitimate.

I am receiving a Pop-Up requesting that I do a security update. I understand that there is a virus that attacks Firefox, so I want to be sure this is legitimate.

All Replies (1)

more options

If in doubt, do the update this way:

If you have the orange Firefox button (abbreviated menus), hover your mouse over the triangle to the right of Help and choose About Firefox. Then use the Check for Updates button.

If you have the classic menu bar, Help > About Firefox. Then use the Check for Updates button.

By the way, the update is Firefox 5.0. There is no intermediate update between 4.0.1 and 5.0. (Welcome to the new world of rapidly escalating version numbers.)

Modified by jscher2000 - Support Volunteer