Thanks for these. I should have clarified, I'm more interested in something that will alert me when newly-discovered vulnerabilities surface. The systems I maintain are protected [enough] today but a new hack could drop that doesn't make mainstream media and I may not hear about it. We have annual security audits but it would be nice to patch things immediately. Aside from subscribing to a security forum/discord/slack, I'm wondering what other methods folks are employing to solve this.