Telegram bot security

[evolucja]

Hi, yesterday after a few hours I started getting offers from completely different city in which I have never been and have no favourites. Any idea what could be a reason?

[mtthp]

Someone else is maybe using your telegram bot and has logged in with it. You can check your config.json which should be updated to verify this hypothesis

[evolucja]

Yes exactly, someone is using my bot on Telegram. I have no idea how it could guess the name?

How can I prevent that?

[mtthp]

You have to make the chat between the bot and yourself private, by disabling the ability to join groups once you have created a conversation with him. Here is a guide to help you with that : https://sarafian.github.io/low-code/2020/03/24/create-private-telegram-chatbot.html