Fraud is an intentionally deceptive act to obtain unlawful gain or deny a victim's rights. Common types of fraud include tax, credit card, wire, securities, and bankruptcy fraud. Fraud can be committed by individuals or businesses and takes many forms like mail, identity theft, healthcare, bank, tax refund, internet, and elder fraud. The fraud triangle concept proposes that three elements - pressure, opportunity, and rationalization - are typically present for occupational fraud. Strong internal controls like a code of conduct, internal audits, and management reviews can help prevent fraud.