Records / De-identification rules
The result is checked again, and again on arrival
Every rewritten record is read a second time with no memory of the first pass, and the copy cannot be downloaded while that check finds anything. A sample is checked a third time by our server, with the same rules, before it is measured; anything found and it is refused and nothing is kept.
Dated Sep 2023Source checked 15 Oct 2026Page out of reach at the last check, 16 Oct 2026Basis: our standard
In the source's own words
“Examining the resulting data files to make sure that no identifying information is unintentionally included in file data or metadata.”
Where it was read
NIST SP 800-188, section 4.6.2, checked Sep 2023
Also read from the same source
Figures it counts in
It is shown on its own, not counted into a figure.
Cited in this guide