6 (63) Telecommunication network: installation or group of installations used in the transmission and routing of telecommunications signals, or exchange of command and management information associated with these signals between network points; (64) Security: situation in which someone or something is not exposed to any danger. Mechanism to prevent any havoc or their attendant effects; (65) Certification service: service provided by a Certification Authority; (66) Electronic communication's service: service consisting wholly or mainly in the provision of electronic communications, except the content of audiovisual communication services; (67) Representative: individual acting on his own behalf or on behalf of the person or entity he represents, which involves a device for creating an electronic signature; (68) Electronic signature: signature obtained by an asymmetric encryption algorithm to authenticate the sender of a message and verify its integrity; (69) Advanced electronic signature: electronic signature obtained using a qualified electronic certificate; (70) Open standard: communication, interconnection or exchange and interoperable data format protocol whose technical specifications and access are public and have no restriction or implementation; (71) Detection system: system that helps detect incidents that could lead to security policy violation and help diagnose potential intrusions; (72) Information system: devices or group of interconnected or related devices performing, by itself or by one or many of its components, automatic data processing, in line with a program; (73) Vulnerability: security breach resulting either intentionally or accidentally by a violation of security policy in the architecture of an electronic communication's network, in designing an information system. Section 5. The terms and expressions not defined under this law shall maintain their definitions or meanings as provided for in international legal instruments to which Cameroon adheres, notably the Constitution and the Convention of the International Telecommunications Union, the Radiocommunications’ Regulation and the International Telecommunications' Regulation. PART 11 CHAPTER 1 ELECTRONIC SECURITY AND GENERAL SECURITY CYBERSECURITY