Aliases: FBI moneypak (other) Lockscreen (other) FBI virus (other)
Microsoft Defender Antivirus detects and removes this threat.
This threat locks your PC and displays a full-screen message, commonly called a "lock screen".
It pretends to be from the FBI or a national police force and tries to scare you into paying a fine to unlock your PC.
Typically, this threat gets on your PC when you visit a hacked webpage.
Our ransomware FAQ page has more information on this type of threat.
The trend towards increasingly sophisticated malware behavior, highlighted by the use of exploits and other attack vectors, makes older platforms so much more susceptible to ransomware attacks. From June to November 2017, Windows 7 devices were 3.4 times more likely to encounter ransomware compared to Windows 10 devices.
Microsoft doesn’t recommend you pay the fine. There is no guarantee that paying the ransom will give you access to your files.
If you've already paid, see our ransomware page for help on what to do now.
Use the following free Microsoft software to detect and remove this threat:
You should also run a full scan. A full scan might find hidden malware.
If you’re using Windows XP, see our Windows XP end of support page.