Telegram is still leaking user IP addresses to contacts
A security researcher has created a tool that allows someone to find out the IP address of a Telegram contact just by calling them.
[ sourced from TechCrunch
This is the best summary I could come up with:
The popular messaging app Telegram can leak your IP address if you simply add a hacker to your contacts and accept a phone call from them.
TechCrunch verified the researcher’s findings by adding Simonov to the contacts of a newly created Telegram account.
Simonov then called the account, and shortly after provided TechCrunch with the IP address of the computer where the experiment was being carried out.
The fact that Telegram leaks your IP address to people in your contacts during a voice call has been known for years, but it’s likely that new, less technical users may not be aware.
Simonov, who founded the cybersecurity firm T.Hunter, told TechCrunch: “Telegram focuses on security and privacy, however, in order to stay safe you need to be aware of the nuances of how the messenger’s voice calls work.”
To avoid leaking your IP address, you have to go to Telegram’s Settings > Privacy and Security > Calls, and then select “Never” in the Peer-to-Peer menu, as shown below.
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