Unfortunately Linux Mint does not track security issues or issue security updates. That alone is reason enough to avoid it completely, but then when you add in their server breach and the way they handled it...
Stick with Debian and Ubuntu. And more Debian, going forward.
I get security updates pretty soon after they're released on the Debian mailing list, actually. Logging on this morning I have an update for the gstreamer issues.
Stick with Debian and Ubuntu. And more Debian, going forward.