Malwarebytes chief intelligence officer Jerome Segura found that the crooks had found a way to use previous tactics to infiltrate Firefox and inflict casualties.
Segura has submitted a bug report to Mozilla and its developers are working on a fix for a future release.
The report pointed out that the detection of the breach is detected by the emergence of several messages on your page you should be careful when you encounter them, including:
Do not ignore this important warning.
Please stop and do not turn off the computer.
Your computer's registry key is closed.
Why did we ban your computer?
The Windows registry key is illegal.
This Windows desktop uses pirated software.
This Windows desktop sends viruses over the Internet.
This Windows desktop has been compromised.
Please contact us within 5 minutes to prevent your account from being disabled.