9 software for controlling access to different parts of a document according to specified security protocols; downloadable software for applying encryption standards to documents and document segments; and computer software for implementing multi-level document encryption for data protection and compliance with security regulations; and software for preventing unauthorized access, alteration, and destruction of electronic data.; Computer software for encrypting and decrypting entire documents according to predefined security or sensitivity levels; computer software for selectively encrypting and decrypting portions of documents based on varying security or sensitivity levels of those portions; computer programs for document encryption management and security; encryption software for data security in electronic documents; computer software for data loss prevention in electronic documents; software for secure document processing and confidentiality protection