Sensitive Data Masking is a cybersecurity technique that automatically hides or obscures confidential information, such as passwords, credit card numbers, or personal identifiers, to prevent unauthorized access or exposure. This process is often used during system monitoring, software testing, or when sharing data, ensuring that sensitive details remain protected even if the data is viewed by people without clearance. Data masking helps organizations comply with privacy regulations and reduces the risk of data breaches by ensuring that private information is never fully visible outside secure environments.