Most people will contact customer service for help when there are some problems that need to be solved. At this time, scammers get the chance to impersonate official supports. Usually, they have the same name and logo (not ture) with the official supports and then hide in the various communities/groups. Once users send their issues on the group, these scammers will send messages to users privately attached unknown links/QR codes to fraud users' private key or mnemonic.