Masking is the technique that Andre employed in the above scenario. Masking is a deidentification

technique that can replace the critical information in database fields with special characters such as

asterisks (*) and hashes (#). Masking can help protect sensitive data from unauthorized access or

disclosure, while preserving the format and structure of the original data . Tokenization is a

deidentification technique that can replace the critical information in database fields with random

tokens that have no meaning or relation to the original data. Hashing is a deidentification technique

that can transform the critical information in database fields into fixed-length strings using a

mathematical function. Bucketing is a deidentification technique that can group the critical

information in database fields into ranges or categories based on certain criteria.