GitLab's security and privacy features

Hi all
I am working for a public service and we have very strict guidelines concerning security and privacy therefore I have to check GitLab’s security and protection features, policies and capabilities.

I did the same request for GitHub and they told me that GitHub has selected the Cloud Security Alliance (CSA) STAR Self-Assessment as their preferred method of conveying their current security practices.

Does GitLab offer something comparable?

Kind regards