Hi there! My account recently got banned in November Mass bans, but luckly it got unbanned. I’ll describe the situation at the end. Before that I have advice to people.
Check your Gaijin Account if you have 2FA enabled and update your password with a strong one if it is weak. 2FA of Steam is not enough as if hacker knows your password, he can easily login into your Account and launch the game through Gaijin Launcher as happened in my case.
Currently Gaijin does not have security measures to prevent someone logging into your account from unknown device or location, which is bad but it is a reality, so by just knowing your password hacker can login into your account. You won’t receive any emails of logins of hacker, so they can be sneaky.
If your account is compromised already you can check the trusted devices and login history in your profile at Gaijin. Hacker can play the game with cheats and you will be banned!
My situation, someone logged into my Gaijin account as my password was very weak from 2016, I suppose back then they allowed that kind of a weak passwords. I didn’t get any emails that someone logged into my Account. Hacker played couple days the game, I didn’t notice anything. On one day when I was playing, I got signed out which was very odd and then I signed back in and continued playing, I didn’t think much of it. Then it happened the second time and shortly after I received email from Gaijin that someone is trying to set new phone number to my Account. I instantly knew what is happening, went and changed my password, enabled 2FA and contacted the support to report the incident. After a week I got banned in a November Mass ban event. Luckly I got an open ticket before I got banned and login history showing foreign IPs with proofs that I trully got hacked. I believe that saved me from getting “This decision is final” reply.