> With Telegram you cannot even do a phone number enumeration attack (this can be changed in settings) by adding phone numbers to your contacts list to find out

> With Telegram you cannot even do a phone number enumeration attack (this can be changed in settings) by adding phone numbers to your contacts list to find out who's using it You mean how multiple companies have done on dozens of millions of accounts before Tg added that feature last year, and are openly selling that data? Like with that dump of 40 million numbers just from Iran and Russia. How often do you change your number?