How do you look for vulnerabilities in Ruby on Rails?

Question

Ruby on Rails

Interested in the security topic of Ruby On Rails. How do you look for vulnerabilities? What resources and scanners are there for finding vulnerabilities in Rails?
Interested in searching both locally during development and existing completed projects on the Internet ...

Answer 1

Vulnerability search tools usually do not target specific technologies and frameworks. So a general purpose tool should do.
Use search.