The Bastion : Bastions are a cluster of machines used as the unique entry point by operational teams to securely connect to devices using ssh.
The Bastion provides ...
XSS game : Warning: You are entering the XSS game area.
API Security Checklist : Checklist of the most important security countermeasures when designing, testing, and releasing your API.
WebScarab : WebScarab is a framework for analysing applications that communicate using the HTTP and HTTPS protocols.
Grype : A vulnerability scanner for container images and filesystems.
The wargames offered by the OverTheWire community can help you to learn and practice security concepts in the form of fun-filled games.