In an effort to increase communications, we are launching an opt-in, announcement-only mailing-list for users of Bitcoin Core to receive notifications of security issues and new releases.
https://bitcoincore.org/en/2016/03/15/announcement-list/Apparently, according to Luke-jr who's subscribed, Bitcoin Core still hasn't even bothered to use their announcement mailing list (specifically set up for security issues and new releases) to warn about CVE-2018-17144 yet (a security issue fixed in a new release no less!). That's pretty incompetent if you ask me.
https://twitter.com/LukeDashjr/status/1043917007303966727