URL: https://wiki.studiominus.nl/details/shadyCodeRejection.html
Title: People Playground Modding - Shady Code Rejection
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Shady Code Rejection
To prevent modders from creating malicious mods, the game skims the source code and rejects the mod completely if it encounters specific structures or keywords.
If you try to use any of the following, your mod will be marked as suspicious:
Forbidden modifiers

extern

Forbidden identifiers

InteropServices
Diagnostics
Http
CodeDom
Application
Quit
UnityWebRequest
TextReader
TextWriter
BinaryReader
BinaryWriter
StreamReader
StreamWriter
StringReader
StringWriter
FileStream
IsolatedStorageFileStream
NetworkStream
PipeStream
UserPreferenceManager
WebRequest
WebClient
WebSocket
Socket
Steamworks
Process
DllImport
LoadFile
ReadFile
WWW
AppDomain
AssemblyBuilder
FromFile
OpenURL
LoadURL
RejectShadyCode
CreateType
File
FileInfo
Directory
DirectoryInfo
Assembly

Forbidden using directives

using System.Security
using System.Web
using UnityEngine.Networking
using Steamworks

or any using directive with aliases, such as

using Rand = UnityEngine.Random