1 files changed, 30 insertions, 0 deletions
diff --git a/bot/exts/backend/security.py b/bot/exts/backend/security.py
new file mode 100644
index 000000000..27e4d9752
--- /dev/null
+++ b/bot/exts/backend/security.py
@@ -0,0 +1,30 @@
+from discord.ext.commands import Cog, Context, NoPrivateMessage
+
+from bot.bot import Bot
+from bot.log import get_logger
+
+log = get_logger(__name__)
+
+
+class Security(Cog):
+    """Security-related helpers."""
+
+    def __init__(self, bot: Bot):
+        self.bot = bot
+        self.bot.check(self.check_not_bot)  # Global commands check - no bots can run any commands at all
+        self.bot.check(self.check_on_guild)  # Global commands check - commands can't be run in a DM
+
+    def check_not_bot(self, ctx: Context) -> bool:
+        """Check if the context is a bot user."""
+        return not ctx.author.bot
+
+    def check_on_guild(self, ctx: Context) -> bool:
+        """Check if the context is in a guild."""
+        if ctx.guild is None:
+            raise NoPrivateMessage("This command cannot be used in private messages.")
+        return True
+
+
+async def setup(bot: Bot) -> None:
+    """Load the Security cog."""
+    await bot.add_cog(Security(bot))