I don't play multiplayer so I am noob at this. I get how ddos attack can ruin games. But how the .. are they getting in password protected lobbies that seem like huge problem. You should be careful what you put for password on those lobbies.For those unaware for the past few days, mp games have had their hosts ddosd relentlessly. Friends of mine who host on my server have had to set it up so their ip switches every day. The hackers get the hosts IP by joining the lobby and with the handshake getting the IP and no one can see it. They have joined private passworded lobbies as well and ddosd them too. It is really awful to have to deal with this and ruined many games.
This has been an issue for hoi4 for a while but now it's affecting eu4 which has much bigger lobbies. The only real solution we've found is to use nakama but no one is sure if they will be able to make a script for that too. Paradox needs to take better measures to protect their players and prevent them getting ddosd and their ip put on lists to ddos all the time for the sin of playing a map game.