@falktx be careful using telegram on your work system.
That may constitute a violation of the GPDR, and possibly your work contract, since Telegram shares all your contacts/clients with their server and other users.
Signal FTW.
PS. and yes, update early update often at least apply security updates..
I agree with @x42 regarding #Telegram. You might want to read about some of the privacy/security implications in this recent investigation: https://www.occrp.org/en/investigation/telegram-the-fsb-and-the-man-in-the-middle @falktx