There is no such Antivirus that alerts about criminal and illegal content. This is the advertisement of a recently discovered ransomware.
Ransomware usually locks the victim's system or browser and displays a warning message pretending to be from the FBI or some other authority. It then informs the victims that their system is locked due to illegal activities and asks them to pay money to unlock it.
A new ransomware has been detected by the Malwarebytes team, informing victims that "your criminal record has been expunged"
The malware also suggests victims purchase an Antivirus for $500 in order to unlock the system and avoid other legal consequences.
Those who don't suspect the scam end up paying around $1200. After paying the money, you will only receive a message saying "your browser will be unlocked within 12 hours" and nothing else.
