Security improvements

Hello everyone I want to improve my security patches for better services of my website. I am new here and don’t know much about this. I am seeking for guide.
kindly help me how can i do this

Could you clarify what you are looking for, with an example or further description? By ‘website’ do you mean a GitLab self-managed instance, or an application project?

If you are looking for code checks that look for common or known vulnerabilities, see Static Application Security Testing (SAST) | GitLab