Crawling Telegram channels/groups and collecting public data is not so difficult due to the open ecosystem of Telegram: Anyone can run their own modified tg-cli.

Telegram needs to think about this, a fix could be something like the websites' robots.txt: An option to disallow crawler robots on the …

We want to share with you this interesting text wrote by Jochem (a member of @geeksChat):

When you join a public group and post there: keep in mind that anyone can read this, even without joining the group. There is a minimal expectation of privacy in public groups, as they are essentially open to …