By Donrich Thaldar
Just as Zeus, the King of the Gods in Greek mythology, assumed various forms to conceal his true identity, so does modern data often undergo transformations to mask its origins. Zeus could become a swan, a bull, or even golden rain to achieve his purposes — all while maintaining his essence. Similarly, pseudonymization techniques aim to alter data enough to protect individual privacy without losing the core information necessary for research or analysis. This entails replacing data subjects’ identifying information in a dataset with unique codes, while keeping another dataset that links these data subjects’ identifying information with their allocated codes. Therefore, just as Zeus’ transformations were sometimes seen through by keen eyes, pseudonymized data can be re-identified by those having access to the linking dataset.
