The purpose of this Recommendation | International Standard is to provide a syntax that allows security services to be applied to JPEG 2000 coded image data. Security services include confidentiality, integrity verification, source authentication, conditional access, and secure scalable streaming and secure transcoding. The syntax allows these security services to be applied to coded and uncoded image data in part or in its entirety. This maintains the inherent features of JPEG 2000 such as scalability and access to various spatial areas, resolution levels, colour components, and quality layers, while providing security services on these elements. This second edition: consolidates all solved/outstanding amendments and corrigenda published since the first edition; removes clause of Registration Authority (first edition’s Clause 7); removes annex of Patent statements (first edition’s Annex D); and includes annex of File Format Security (this second edition’s Annex D). ISO/IEC 15444-8 was prepared by Joint Technical Committee ISO/IEC JTC 1, Information technology, Subcommittee SC 29, Coding of audio, picture, multimedia and hypermedia information, in collaboration with ITU-T. The identical text is published as Recommendation ITU-T T.807.