In cybersecurity, an identifier is a unique code, number, or string assigned to a specific entity, such as a software vulnerability, user, or device. Identifiers help in accurately tracking, referencing, and managing vulnerabilities, incidents, or users within systems. For example, the Common Vulnerabilities and Exposures (CVE) system assigns a unique identifier to each publicly known cybersecurity vulnerability. This ensures consistent communication and efficient coordination among security professionals, organizations, and tools. Identifiers are essential for maintaining organized records, enabling automated processes, and supporting effective incident response. They also facilitate the sharing of information across various platforms and stakeholders, reducing confusion and improving overall security management.