crosspost from @matrix since their instance is currently down:
We’ve taken down the servers which host (link: http://Matrix.org) Matrix.org and (link: http://Riot.im) Riot.im for emergency security maintenance - estimated downtime is several hours. More updates as we have them.
the security maintenance is to address issues with (link: http://Matrix.org) Matrix.org's production infrastructure. This is not a Synapse issue.
#Matrix Security Breach!
especially for matrix.org users: READ THIS!
Kudos to matrix for being transparent about exactly what happened. It's a refreshing change of pace from the likes of Facebook.
Mastodon instance for lains, by lains