This European Standard defines security for HBES communication. It is based on ISO/IEC 24767-2, Home network security / Secure Communication Protocol Middleware (SCPM). Having a secure HBES solution has several advantages. It makes the HBES RF Communication Medium more secure: HBES RF Radio Frames in plain communication can easily be traced (by sniffer for example). It allows for secure applications. Secure communication is interesting in shutter and door control and anti-intrusion security, in order to prevent intrusive commands (burglars& ). It is also interesting in metering to protect for example electrical consumption data. This document does not define any type of application.