Contextual scoring of authenticators

Disclosed herein are methods, systems and device for estimating an identity confidence level for a user requesting access to a secure resource, comprising: initiating an authentication session to authenticate the user using a client device to access the secure resource, computing a cumulative identity confidence score in a plurality of iterations and successfully authenticating the user in case the cumulative identity confidence score exceeds a threshold predefined for the secure resource. Each iteration comprising initiating a respective one of a plurality of authentication methods selected according to contextual authentication attribute(s) identified for the authentications session, computing an identity confidence score for the user in case of successful authentication, adjusting the confidence score according to the contextual authentication attribute(s), updating the cumulative identity confidence score according to the adjusted identity confidence score and initiating another iteration in case the cumulative identity confidence score does not exceed the predefined threshold.