TeamViewer: Security, guaranteed!
All TeamViewer versions and connection types are fully encrypted. This encryption is based on a 2,048-bit RSA Private/Public Key Exchange and 256-bit AES session encryption. This ensures the same level of security as HTTPS and SSL and is considered completely secure according to the current state of technology.
Key exchange also guarantees that the data channel is completely encrypted from user to user and that any routers or servers in between them is absolutely not capable of reading or analyzing the data stream. Safety and privacy were and are always a main concern in the development of TeamViewer.