Abstract: Leveraging an established authenticated session in obtaining authentication to a client application includes receiving a request for access to a client application requiring authentication of a requestor and determining whether there exist characteristics of leverageable authentications corresponding to established sessions having an authenticated state at a time of the determination. When the determination reveals characteristics of at least one leverageable authentication corresponding to an established session, and attempt is made to obtain access for the requestor to the client application based on the at least one leverageable authentication, and the requestor is provided with a notification related to the 1 attempt to obtain access for the requestor to the client application.