On Thu, 2019-04-04 at 09:55 +0100, RhinosF1 Wikipedia wrote:
Do we know when it was implemented and why? Is it part of the response to earlier security issues?
Yes.
Best place to bring up Phabricator questions is https://www.mediawiki.org/wiki/Talk:Phabricator/Help which is linked from the Phabricator front page.
Cheers, andre