In cybersecurity, 'spec' is short for 'specification.' It refers to the detailed technical description of a computer system, software, or protocol. A spec outlines the required components, functions, and behaviors, serving as a blueprint for development and security assessment. Understanding the spec is crucial for identifying potential vulnerabilities, ensuring compatibility, and maintaining compliance with industry standards. Security professionals often review specs to anticipate risks and design effective safeguards. Specs are foundational documents in both hardware and software projects, guiding implementation and future updates while supporting transparent communication among stakeholders.