An amicus brief, short for 'amicus curiae brief,' is a legal document submitted to a court by an individual or organization that is not a party to the case. Its purpose is to offer additional information, expertise, or arguments that may assist the court in making its decision. In cybersecurity, amicus briefs are often filed by advocacy groups, industry experts, or technology companies to provide insight on technical issues, policy implications, or broader impacts of a case involving digital security, privacy, or technology law. These briefs help ensure that the court considers a wide range of perspectives beyond those presented by the direct parties involved.