Techniques described herein include systems and methods for biometric authentication utilizing a dynamically updated biometric template derived from social media content of a user. In some embodiments, a service provider computer receives an authentication request that comprises biometric data provided by the user utilizing a user device. Social media content associated with the user may be received by the service provider computer from a social network service computer. In embodiments, the service provider computer may generate a biometric template for the user based on the received social media content where the biometric template is continually updated based on new social media content shared by the user. The service provider computer may determine a confidence score based on a comparison of the biometric data and the biometric template. The service provider computer may verify the authentication request for the user based at least in part on the confidence score.