Protecting sensitive data is essential for modern businesses, and technologies like format-preserving encryption and data masking play a key role. Tokenization, widely adopted since the early 2000s, helps reduce the amount of sensitive data stored by replacing it with surrogate values called tokens. These tokens maintain key characteristics of the original data, such as length and character format, while preventing exposure of actual information. This approach minimizes the risk of data breaches and enhances security for personally identifiable information and other confidential data, enabling organizations to protect critical assets while maintaining usability and compliance.

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