The CAS system CTI [NORD-E] is the own development of the Chinese company COMPUNICATE and over the past 10 years it has been installed in more than 70 countries. Three-level protection from illegal viewing consists of three basic elements: encryption with updated keys, protection of smart cards, protection of the chipset. The encryption keys on the server are updated every 5-10 seconds. Subscriber smart cards have the EAL 5+ security certificate. Active protection and encryption memory technology protects smart cards from physical copying. Each chipset has a unique ID number. The smart card and chipset are combined according to the chip number and keys. CW is decrypted only inside the chipset, which protects against stealing the control word by pirates. For the entire history of the use of the CAS CTI system, there has been no hacking or unauthorized access to protected content.