A criminal background check is a process used to verify an individual's criminal history. This check typically includes information about any past arrests, convictions, and other legal issues. Employers, landlords, and organizations often conduct these checks to ensure safety and security in their environments. The information gathered during a criminal background check can vary by jurisdiction and may include records from local, state, and federal law enforcement agencies. Individuals can also request their own background checks to review their records and address any inaccuracies that may exist.