Oddbean new post about login | logout Telegram has serious issues but this is just a common, regurgitated type of scam site, same thing with Instagram 'DM viewer' sites. https://www.trustpilot.com/review/tgtracker.com Here is a site just like it that doesn't exist anymore, likely ran by the same people but a new domain. https://web.archive.org/web/20210124115118/http://teletracker.org/ Anyone selling this capability out in the open wouldn't be smart.