Systems and methods are provided for linking a web identity and a portable device to provide web access to a user from a vehicle. An example system includes a presence agent that may be configured to validate the presence of the portable device in the vehicle by recognizing a device identifier saved on the portable device. After the presence of the portable device is validated, a security manager may receive a user identifier, and verify if the user identifier corresponds with a known user value. Then, the security manager may send a user identity secure proxy to a credential manager. The credential manager may be configured to receive the user identity secure proxy, and in response, pass one or more credentials to a computing device onboard the vehicle. The credentials may indicate that the user is authorized to access one or more web services from the computing device.