WHEN IS THE BEST TIME TO PERFORM A COMPREHENSIVE SECURITY AUDIT? Every four years. Companies should perform a very thorough IT audit every four years evaluating every system plus backup and restore, disaster recovery, and emergency procedures, says Michelle Johnston Sollicito, an e-business consultant and author. That in-depth audit should be followed by an update audit annually, which evaluates only new systems or those that have undergone significant changes, she says, and mission-critical systems with sensitive or financial information should also be audited annually. Reminder: However, many companies must follow the guidelines laid out by regulations such as Sarbanes Oxley that specify how often an audit should be performed, says Johnston Sollicito.
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