On Wed, Oct 16, 2013 at 1:59 PM, Jaime Anstee <janstee(a)wikimedia.org> wrote:
It was actually legal that identified it as a problem,
but I think that is
being handled by good faith in people not releasing/pubishing cohort
membership of any individual level data with identifiers. Many program
leaders will be able to match different data points by user name also
whereas most do not know what to do with the IDs (which made the IDs a bit
more private) - Jaime.
If any person has access to user ids you should assume they also have
access to usernames. Both are public information. Assuming numeric ids are
more private is security through obscurity.
--
Steven Walling,
Product Manager
https://wikimediafoundation.org/