Know-how is the practical, proprietary knowledge a business builds through experience: the methods, shortcuts, settings, workflows, and judgment that make its work better or faster than a competitor’s. Unlike public documentation, know-how is often tacit, meaning it lives in people, internal procedures, and carefully guarded process details. In business, it can be a major source of competitive advantage.
In cyber security, know-how is valuable because it is often exactly what attackers want to steal. Ransomware groups, insiders, and supply-chain attackers may target design files, source code, formulas, customer procedures, or operational playbooks to copy capabilities or undermine a company’s edge. Defenders protect know-how with access control, encryption, data classification, logging, and strict limits on what gets shared with third-party tools. Good training matters too: staff must know which information can be used in AI systems and which must stay private.