All the users who have concerns about telegram logins on these sites ,
You can read by yourself, what we do when login through and what information we can access when you do a login on these websites.
https://core.telegram.org/api/url-authorizationhttps://core.telegram.org/bots/api#loginurlThis should give you all the info needed.
But in short the one we are using is the official telegram login method without giving any info, we can't see ur chat or send a message to someone or do anything else , nothing can be done. If we could do that, we wouldn't have to ask you to follow the channel. And refresh the page after doing it.
We barely got time for our own life, not free to snoop on others.