Explanation: The various patterns applicable to software assurance in general are as follows: Hidden implementation: It limits the ability of an attacker to distinguish the internal workings of an application. Partitioned application: It splits a large and complex application into two or more simple components. Secure assertion: It distributes application-specific sanity checks throughout the system. Server sandbox: It creates a wall around the Web server to include the damage that occurs because of an undetected fault in the server or an exploited vulnerability.