They get the IP + graphic card every time you log on. You can see the information sent by using wireshark. Possibly more. If you want a safe main account you need 2 computers or a fast vitual one and the the virtual/second one via proxy. Or have main over a ping reducing gaming proxy. That way you are most likely to not lose main in a banwave against your IP as both have different IP + hardware. You may even bot kinda hardcore on main with low banchance if you have alert on player detected.