"Firstly, there are no server checks to verify file integrity. Teetharejustdone suggests modders could make trees smaller, or highlight player models without the game’s servers (or other players) knowing. Secondly, all terrain and collision is handled client side, meaning players can edit the game’s .esm file to allow themselves to walk through walls. The Fallout 76 PC servers don’t check for integrity on the .esm file.
Furthermore, there is no encryption or obfuscation of client-to-client communication. Player IP addresses, and game information is sent in plain text between clients. Teetharejustdone says people can use Wireshark or similar programs to get player locations, health info, and more directly from network packets. The Fallout 76 PC servers supposedly don’t check anything they are being told, and because of the plain text network traffic, the game can be exploited by constantly sending certain information. The example teetharejustdone gave was to capture and then resend the information that you have full HP. One final example they gave was being able to forge a packet with the disconnect command from those plain text IP addresses you got earlier."
