3 (20) Secret key: key known to the sender and recipient used to cipher and decrypt messages using the symmetric cipher mechanism; (21) Source code: all technical specifications, with no restrictions on access or implementation of a software or communication protocol, interconnection, interchange, or data format; (22) Audiovisual communication: public communication by television and radio broadcasting services; (23) Electronic communication: electromagnetic emission, transmission or reception of signs, signals, writings, images or sounds; (24) Confidentiality: maintenance of the confidentiality of information and transactions to prevent unauthorized disclosure of information to non-recipients enabling the reading, listening, intentional or accidental, illegal copying during storage, processing or transfer; (25) Content: all information relating to data belonging to individuals or legal entities, transmitted or received through electronic communication networks and information systems; (26) Illegal content: content that infringes on human dignity, privacy, honour or national security; (27) Electronic mail: message in the form of text, voice, sound or image transmitted through a public communication network, stored in a network server or the recipient’s terminal equipment until he retrieves it; (28) Encryption: use of codes or signals to convert information to be transmitted in the form of signals that are not understood by others; (29) Cryptanalysis: all resources used to analyze initially encrypted information to be decrypted; (30) Encrypted text: encrypted or encoded message; (31) Cryptography: use of mathematical algorithm to encrypt information in an attempt to make it unintelligible to those who are not authorized to access it; (32) Cybercriminality: infraction of the law carried out through cyberspace using means other than those habitually used to commit conventional crimes; (33) Cybersecurity: technical, organizational, legal, financial, human, procedural measures for prevention and deterrence and other actions carried out to attain set security objectives through electronic communication networks and information systems, and to protect privacy; (34) Certification practice statement: practices (organization, operational procedures, technical and human resources) that the competent certification authority applies within the framework of the provision of this service in accordance with the certification of a policy or policies it undertook to comply with;