Update SECURITY.md

SECURITY.md

@@ -15,10 +15,10 @@ Elixir version | Support
 
 ## Announcements
 
-New releases are announced in the read-only [announcements mailing list](https://groups.google.com/group/elixir-lang-ann). You can subscribe by sending an email to [email protected] and replying to the confirmation email.
+New releases are announced in the read-only [announcements mailing list](https://groups.google.com/group/elixir-lang-ann). You can subscribe by sending an email to [email protected] and replying to the confirmation email. Security notifications [will be tagged with `[security]`](https://groups.google.com/forum/#!searchin/elixir-lang-ann/%5Bsecurity%5D%7Csort:date).
 
-Security notifications [will be tagged with `[security]`](https://groups.google.com/forum/#!searchin/elixir-lang-ann/%5Bsecurity%5D%7Csort:date).
+You may also see [all releases](https://github.com/elixir-lang/elixir/releases) and [consult all disclosed vulnerabilities](https://github.com/elixir-lang/elixir/security) on GitHub.
 
 ## Reporting a vulnerability
 
-Please disclose security vulnerabilities privately at elixir-security@googlegroups.com
+[Please disclose security vulnerabilities privately via GitHub](https://github.com/elixir-lang/elixir/security).