Identity theft is a crime that affects many people and can have significant negative consequences. It involves a criminal obtaining and using someone's personal information, such as their name, Social Security number, bank or credit card details, without permission to commit fraud or other crimes. Common types of identity theft include drivers license identity theft, social security identity theft, medical identity theft, criminal identity theft, and financial identity theft. Victims often do not know how their information was originally stolen. Criminals may obtain it through lost or stolen wallets or mail, computer hacking, phishing scams, or by working for companies that store personal data.