• Firefox is set to update automatically by default. You can check for updates at any time, and if one is available, it will be downloaded but not installed until you restart Firefox.
• Browsers that are up to date safeguard you from viruses, security breaches, and hacking. Older browser versions may be exposed to security flaws and attacks. Firefox developers have been known to provide a security upgrade within a day after discovering a flaw.
• A Firefox software update is a little amount of new code that is downloaded for free and quickly to your existing Firefox browser. These small patches may include security updates or other minor modifications to the browser, ensuring that you're running the most up-to-date version of Firefox.

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