wrote:
FBI virus is a sneaky malware. Ransom-ware is malicious software that
restricts access to a computer until a ransom is paid. It displays a
fake warning message and asks you pay a fee to unblock the computer.
It will frequently disguise itself as the police or FBI. Ransom-ware
can be difficult to remove; however, it is not impossible.

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home remedy: boot in safe mode, run malwarebytes. end