Re:Post-mortem and remediations for the Matrix.org security ...
by Arathorn on Wednesday May 08, 2019 @09:49PM
(#19864668)
I should probably also link to the HN thread from when this happened, which has a lot of interesting discussion about the security issues in question: https://news.ycombinator.com/item?id=19642554
Also, https://news.ycombinator.com/item?id=19643227 is an excellent tl;dr.