Redaction is the process of editing documents to obscure or remove sensitive information before sharing, publishing, or disclosing them. In cybersecurity, redaction is crucial for protecting confidential data such as personally identifiable information (PII), classified materials, or proprietary business information. The process typically involves blacking out or deleting specific text, images, or metadata that could expose sensitive content. Proper redaction ensures that unauthorized individuals cannot access or reconstruct the hidden information, thereby reducing the risk of data breaches, identity theft, or legal liabilities. Redaction tools are often used to automate and verify the thorough removal of sensitive data from electronic files.