The well-known remote control software TeamViewer was hacked many years ago, and some of the user computers were controlled by hackers and installed backdoors to steal data. But even now the company does not admit that the server was attacked. On the contrary, the developers said that users were attacked mainly by leaking remote IDs and passwords. However, it is shocking that the security company has once again revealed that TeamViewer has been hacked. The attacker can control all the computers that log in to the software and operate it arbitrarily.