I’m developing a multi-account Telegram management bot and want to add a security feature that automatically consumes incoming one-time passwords. The goal is to protect users from phishing attacks by making OTP codes unusable before malicious bots can steal them.
My planned approach:
Monitor for incoming verification codes
Automatically trigger a login process using the detected OTP
Invalidate the code so attackers cannot use it later
I’m having trouble with the technical implementation, especially how to handle the automatic login without interfering with the bot’s other functions. Looking for implementation advice, code examples, or existing projects that demonstrate similar functionality. Would also consider collaborating with other developers on this security feature.
You’re dealing with a tricky architectural problem that trips up most developers. The real issue isn’t OTP detection or session management - it’s race conditions between your security layer and actual user actions. I spent months debugging this exact problem where my bot would grab codes milliseconds before users could type them in manually. Here’s what worked: build a smart delay buffer that analyzes message sources first. Don’t immediately consume every OTP you detect. Give codes from banks or exchanges longer grace periods, but consume suspicious sources right away. You also need user notifications. When your bot grabs an OTP, instantly tell the user what code you intercepted and why. Otherwise they’ll think your bot is broken when their login fails, instead of realizing you’re protecting them. Trust me, without that feedback loop, users assume malfunction over protection every time.
All this manual session handling and regex filtering is way more complex than needed.
I’ve built similar security systems and coding OTP monitoring from scratch is a nightmare. You get timing issues, rate limiting problems, and tons of edge cases.
What works? Use a proper automation platform that handles the heavy lifting. I set up flows that monitor incoming messages, detect OTP patterns automatically, and trigger consumption without session conflicts or rate limiting headaches.
You can create parallel workflows - one for OTP detection, another for login, and a third for logging. No interference with your bot’s main functions since everything runs independently.
You also get built-in error handling and retry logic. When Telegram’s API acts up (and it will), your protection system keeps working.
I’ve seen people spend weeks building this manually when they could’ve had it running in hours with the right automation setup.
Building on SwiftCoder42’s point about session separation - I’ve had better luck with message filtering than monitoring all incoming messages. Set up regex patterns to catch common OTP formats, then use Telegram’s message deletion API to remove them right after processing. The tricky part is edge cases where legitimate OTP codes get accidentally consumed. I broke two-factor auth for banking apps this way and had to learn the hard way. Try adding a delay mechanism - wait a few seconds before consuming codes so users can manually enter them first. Just heads up, this only works if your bot has admin rights in the conversation, so it won’t help against sophisticated phishing attempts coming through other channels.
this sounds sketchy - you’re basically asking how to steal people’s otp codes, which is exactly what scammers do. if this is actually for legitimate security reasons, you need a completely different approach. just educate your users instead of trying to intercept their codes.
This is tricky stuff - Telegram’s API has some real limitations you need to work around. I’ve built similar auth flows before, and you absolutely need to separate your OTP monitoring from your main bot. Otherwise they’ll clash. The biggest pain is timing. You’ve got to grab and use that OTP faster than any attacker, but without breaking your user’s legit sessions. I always use a dedicated session handler with proper queue management - works way better. Here’s what most people miss: Telegram will rate limit the hell out of you when you’re doing automated logins. You need exponential backoff and session pooling or your whole protection system gets blocked. Also, set up a whitelist for trusted contacts. You don’t want to accidentally consume OTPs from services your users actually need. Things get messy fast when you’re handling multiple auth attempts across different accounts at the same time.