Since .7z files can execute scripts once unpacked, keep these precautions in mind:
: It may be a compressed mod pack for titles like Skyrim , Minecraft , or Assetto Corsa , where "BFSG" stands for a specific creator group or a "Big File Setup Guide." BFSG21.7z
: Always run the file through a service like VirusTotal before opening. or Assetto Corsa
I can give you much more specific details if I know the context! BFSG21.7z