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The Privacy Theater of Hashed PII

matthodges.com · published 19 October 2025

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Link
Host
https://en.wikipedia.org/wiki/Suppression_list
en.wikipedia.org
https://www.johndcook.com/blog/2019/07/20/hashing-pii-does-not-protect-privacy/
johndcook.com
https://pages.nist.gov/800-63-4/sp800-63b.html
pages.nist.gov
https://www.ssa.gov/oact/babynames/names.zip
ssa.gov
https://partners.bamboohr.com/md5hash/
partners.bamboohr.com
https://www.unsubcentral.com/phone-number-suppression/
unsubcentral.com
https://en.wikipedia.org/wiki/Private_set_intersection
en.wikipedia.org
https://blog.codinghorror.com/rainbow-hash-cracking/
blog.codinghorror.com
https://parquet.apache.org/
parquet.apache.org
https://duckdb.org/
duckdb.org
https://en.wikipedia.org/wiki/Zstd
en.wikipedia.org
https://en.wikipedia.org/wiki/MD5
en.wikipedia.org
https://en.wikipedia.org/wiki/North_American_Numbering_Plan
en.wikipedia.org
https://en.wikipedia.org/wiki/Salt_(cryptography
en.wikipedia.org
https://www.ndss-symposium.org/wp-content/uploads/ndss2021_1C-3_23159_paper.pdf
ndss-symposium.org
https://www.ssa.gov/policy/docs/ssb/v69n2/v69n2p55.html
ssa.gov
https://www.nanpa.com/
nanpa.com