There are a lot of fake security alerts that are designed to trick users into downloading malware. Firefox need to update immediately Virus is a fake security alert that targets Mozilla Firefox users. When you try to access any website, and your Firefox browser gets corrupted by this infection, you are presented with a message against a dark red background that reads as follows:
Firefox need to updated immediately!
Your version of Firefox (18.0) is vulnerable and needs to be updated.
Attack pages try to install programs that steal private information, user your computer to attack others, or damage your system.
Some attack pages intentionally distribute harmful software, but many are compromised without the knowledge or permission of their owners.
Start update process
It does not matter which version of Firefox you use. If your browser gets compromised, you must avoid clicking the Start update process button at any cost, because Firefox need to update immediately Virus is related to Urausy FBI Ransomware Infection. Hence, the moment you click the button, you will infect your computer with ransomware, and you will no longer be able to access your desktop.
Therefore, do not pay attention to Firefox need to update immediately Virus, and if you think that your Firefox browser needs to be updated, access the official website at mozilla.org and update your browser from there.
In case you have pressed the "Start update process" button and now you are infected with Urausy FBI Ransomware Infection, you mustn't pay a single cent to it, even though it says that your computer will be unlocked if you pay a $200 ransom fee via MoneyPak. Keep your money to yourself, and remove Urausy FBI Ransomware Infection following the instructions below:
Windows Vista & Windows 7
In case you haven't been infected with Urausy FBI Ransomware infection, but you have seen the Firefox need to update immediately Virus notification on your browser, you are strongly advised to perform a free SpyHunter scan on your system, because you might be infected with Trojans that display the Firefox need to update immediately Virus fake alert.