About telegram Tdata

i use 200+ telegram accounts , bought by Tdata.


i recently found out that even if i change 2fa password , and change recovery email

some one with my Tdata can always log in to my account without typing any of those.

how do i secure my accounts ? how can i prevent someone logging in with my Tdata?

you need to logout from that tdata, and create a new session

Revoke the access to other devices
Disable the 2fa and enable again