Techniques for discovery and management of applications in a computing environment of an organization are disclosed. A security management system discovers use of applications within a computing environment to manage access to applications for minimizing security threats and risks in a computing environment of the organization. The security management system can obtain network data about network traffic to identify unique applications. The security management system can perform analysis and correlation, including use of one or more data sources, to determine information about an application. The system can compute a measure of security for an application (“an application risk score”) and a user (“a user risk score”). The score may be analyzed to determine a threat of security posed by the application based on use of the application. The security system can perform one or more instructions to configure access permitted by an application, whether access is denied or restricted.