Hello Arne,
On 28 Feb 2016, at 10:28, Arne de Laat adelaat@nikhef.nl wrote:
An edit in the opening post of the reddit thread mentions that the update has been pulled by Apple.
As far as I know it was a “silent" update, therefore machines that were switched on and that had an active internet connection during the time that the update was pushed may be affected. I don’t remember to have approved installation of an update, but at the time the security update was applied to my machine I was dealing with solving a problem with the use of LaTeX under El Capitan which resulted in several dialog boxes concerning access rights, and I am not 100% sure that I did not misinterpret a dialog concerning the security update. However, the reports in e.g. the reddit thread suggest that this update was applied without users knowing that their system was updated!
There are several claims that only installing the package file is sufficient to undo the effect of the upgrade, but I remember that it did not work for me,
Jos