The linked blog post [0] and the new security marketing page [1] both have a little more detail on what this actually means.
Basically, Semmle offers a static analysis tool that operates on your source code as a graph (from what I understand) and points out bugs and security holes in your code. Github is now offering that for free on repos at all tiers.
Basically, Semmle offers a static analysis tool that operates on your source code as a graph (from what I understand) and points out bugs and security holes in your code. Github is now offering that for free on repos at all tiers.
[0] https://github.blog/2019-09-18-securing-software-together/
[1] https://github.com/features/security