| Subject | English | Portuguese |
| comp., MS | authentication service | serviço de autenticação (A service provided by an operating system or underlying subsystem (like Microsoft Internet Information Services) that provides a means to authenticate users, typically using a user name and password. Part of the general security system, authentication services can also be offered at the application layer) |
| comp., MS, Braz. | authentication service | serviço de autenticação (A service provided by an operating system or underlying subsystem (like Microsoft Internet Information Services) that provides a means to authenticate users, typically using a user name and password. Part of the general security system, authentication services can also be offered at the application layer) |
| comp., MS | Multi-Factor Authentication Service | Serviço Multi-Factor Authentication (A service that places an automated phone call, sends a text message, or pushes a notification to the Multi-Factor Authentication app on the user's mobile device and processes the result) |
| comp., MS, Braz. | Remote Authentication Dial-In User Service | serviço RADIUS (A proposed Internet protocol in which an authentication server provides authorization and authentication information to a network server to which a user is attempting to link) |
| comp., MS | Windows Azure Multi-Factor Authentication Service | Serviço Windows Azure Multi-Factor Authentication (A service that places an automated phone call, sends a text message, or pushes a notification to the Multi-Factor Authentication app on the user's mobile device and processes the result) |