An approach for authentication is provided. The approach performs identifying, by one or more computer processors, an account attempting to access content. The approach performs identifying, by one or more computer processors, a file including at least authentication information. The approach performs identifying, by one or more computer processors, a location of the authentication information within the identified file. The approach performs identifying, by one or more computer processors, a length of the authentication information. The approach performs identifying, by one or more computer processors, the authentication information in the identified file based at least on the identified location and the identified length of the authentication information. The approach performs includes determining, by one or more computer processors, whether the identified authentication information matches previously submitted authentication information for the identified account attempting to access content requiring authentication.