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How can we safeguard data from table differencing attacks?

Addressing differencing attacks on tabular data products

Data tables seem in and of themselves safe. However, by comparing many tables in a systematic manner, confidential microdata can potentially be recreated through a hacking approach called “table differencing.” If successful, the personal identification information (PII) behind the data could be compromised.

The Bureau of Labor Statistics asked Westat to investigate various risk mitigating solutions in order to safeguard the data in a potential query tool based on the Bureau’s Occupational Requirements Survey.

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