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 pending charges. Employers, landlords, and organizations often conduct these checks to ensure safety and security in their environments. These checks can be performed through various sources, including law enforcement agencies and private background check companies. The information obtained can help assess a person's suitability for a job, rental agreement, or other responsibilities. It's important to note that laws regarding the use of criminal background checks vary by jurisdiction.