Deckit is a local Godot toolkit, not a network server or an anti-cheat system.

• DeckitCardZone.Visibility and the optional visual components control what is displayed, not which card data a peer can access.
• Multiplayer and online games must filter concealed card definitions and state before sending data to other players, and validate actions on the authoritative side.
• The current project target is Godot 4.7.x. Refer to Testing and troubleshooting for installation checks and known boundaries.

If you find a security-sensitive issue, use GitHub private vulnerability reporting if available, rather than publishing exploitable details in a public issue.