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What's considered to be confidential personal information? Here are some examples: Social security numbers, driver's license numbers or identification card numbers, account numbers, credit or debit card numbers, etc. Check with your state for a complete list of what data is considered confidential. There are many laws in effect here in the United States such as Sarbanes-Oxley, HIPPA and many others that require data stored in computer systems to be secured. For example, some of these laws require first names, last names, and other seemingly harmless information to be stored securely.