Telegram Bot Security Guide
Protect the bot token, user data, server resources and webhook endpoint. These controls apply whether the code is written by a developer or generated by AI.
Security checklist
Treat this as a release gate.
Keep tokens in server-side config. Rotate immediately after any leak.
Message text, callbacks, files and IDs are untrusted input.
Protect expensive AI commands and external APIs from loops and abuse.
Verify Telegram user IDs before admin-only commands.
Handle HTML/Markdown parse modes intentionally to prevent malformed messages.
Check extension, MIME type, size and storage path before processing files.
Every outbound API request needs connection and total time limits.
Never log bot tokens, passwords, API keys or full payment secrets.
Revoke/regenerate the token with BotFather, update the server-side secret, restart deployment and review logs for unauthorized API usage.