Abstract: A secure login management system is coupled to at least one client system and coupleable to at least one target system and includes a sign-on module for connecting the user to a target system secured against unauthorized access, using at least target system authentication data expected or required by the target system, wherein the secure login management system is at a distinct network address from the user's client system and is accessible by a plurality of client systems available to the user. The secure login management system can provide access by client systems without requiring special preconfiguration of specific client systems or special configuration of target systems. The authentication data can include one or more of a username, password, fingerprint, digital sequence derived from a security device possessed by the user, and/or one-time use password. The secure login management system might perform authentication data management to automatically generate new target system authentication data.