XSS game : Warning: You are entering the XSS game area.
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 ...
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ZeroDB : ZeroDB enables clients to run queries over encrypted databases without exposing decrypted data to the server and without a proxy gateway.
domsnitch : A passive reconnaissance tool inside the DOM (experimental)
The wargames offered by the OverTheWire community can help you to learn and practice security concepts in the form of fun-filled games.