Patent ID: 8875261

Claim:
A computer system for controlling access to user accounts comprising: storage apparatus for initially storing a single temporary password to a user account to allow said user account to create a preselected list of user account passwords with each password available for use by said user account and created according to any password creation rules of said computer system to form a password stack; storage apparatus for storing a list of user account created passwords to form said password stack with each password available for use by said user account and created by said user account according to said password creation rules of said computer system; storage apparatus for storing a set of conditions for automatically assigning a new password to said user account from said preselected list of user account created passwords of said password stack when conditions for assigning a new password occur, said set of conditions including specified time limits to expiration for each of said passwords in said password stack; and a processor for monitoring said user account to determine when said conditions occur and automatically act to assign a new password from said preselected list of user account created passwords of said password stack when said conditions occur including conditions for automatically assigning to said user account a new password from said password stack when a virus is detected.