Data masking, also known as data obfuscation, is the process of hiding original data with modified content (characters or other data). This technique is used to protect sensitive information while maintaining a functional substitute for occasions when the real data is not required. For example, in a test database environment, data masking can be used to create a version of the data that is safe for developers to use without exposing sensitive information. Unlike encryption, which can be reversed with the correct key, data masking is meant to be non-reversible and maintains the format of the data so that it can be used without decryption.
References: The explanation provided aligns with the objectives and documents of the Certified Network Defender (CND) course, which emphasizes the importance of protecting information by obscuring specific areas that contain sensitive data. The reference to data masking as a means to ensure information protection is supported by industry sources123.
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