42 Design, development and implementation of software for secure network operations, featuring data encryption, user identification and authentication, digital key management, cloud networking integration, and digital cryptography; Computer security services in the nature of providing authentication, issuance, validation and revocation of digital certificates; Computer security services, namely, restricting unauthorized access to computer networks, servers and services; Computer security services, namely, enforcing, restricting, and controlling access privileges of users of computing resources for cloud, mobile, or network resources based on assigned credentials; Data encryption and decoding services; Development of software for secure network operations