[MyData & Open Data] article29 dp working party: Opinion 05/2014 on Anonymisation Techniques

Sally Deffor sally.deffor at okfn.org
Tue Apr 29 10:44:34 UTC 2014


Hi Stef,

Also, in the ICO's Code of Practice on anonymization techniques (archived
on our Resources <http://personal-data.okfn.org/resources/>page), there is
a case study of such a linkability (on Page 75).


On pseudonymised data, I quote

This can be a particular vulnerability where pseudonymised data sets
are concerned, because even though pseudonymised data does not
identify an individual, in the hands of those who do not have access
to the ‘key’, the possibility of linking several anonymised datasets to
the same individual can be a precursor to identification.

 Sally


On 28 April 2014 19:10, stef <s at ctrlc.hu> wrote:

> howdy, excellent intro and assessment of anonymization techniques and their
> known weaknesses:
>
> http://ec.europa.eu/justice/data-protection/article-29/documentation/opinion-recommendation/files/2014/wp216_en.pdf
>
> some key points:
>
> 'identification'
> > ... not only means the possibility of retrieving a
> > person's name and/or address, but also includes potential
> > identifiability by singling out, linkability and inference.
>
> pseudonymised data
> > ... cannot be equated to anonymised information as they
> > continue to allow an individual data subject to be singled out and
> > linkable across different data sets . Pseudonymity is likely to allow
> > for identifiability, and therefore stays inside the scope of the legal
> > regime of data protection. This is especially relevant in the context
> > of scientific, statistical or historical research.
>
> page 11 explains singling out, linkability and inference.
>
> the theme is that there is no silver bullet, and gives good examples
> for vulnerability of each technique.
>
> --
> otr fp: https://www.ctrlc.hu/~stef/otr.txt
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>



-- 


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