CodeGuard is a Unity obfuscation editor extension.
As Unity uses Mono, it is easy to read and manipulate the code of Unity projects via freely available tools.
Obfsucators are programs used to hinder this, but due to the nature of Unity, normal .NET obfuscators cannot obfsucate Unity projects without breaking them.
CodeGuard is an obfuscator and code protector written specifically for Unity projects.
Works in Unity & Unity Pro, Windows and Mac for obfuscation and code protection of Windows, Mac, Linux, Web Player, Android and iOS/iPhone builds. BlackBerry and Windows Phone support is under development.
More Info: _https://assetstore.unity.com/packages/tools/utilities/codeguard-8881