Telegram Messenger is a communication app that allows you to create encrypted chats and phone calls with other users over the Internet. This program describes itself as being a secure and private communication app, but a researcher has shown that in its default config it would allow a user's IP address to be leaked when making calls.
A security researcher has found a method that can be used to easily identify the public IP addresses of misconfigured dark web servers. While some feel that this researcher is attacking Tor or other similar networks, in reality he is exposing the pitfalls of not knowing how to properly configure a hidden service.
The takedown of three major Dark Web markets by law enforcement officials over the summer has driven many vendors of illegal products to set up their own shops that, in many cases, are not properly configured and are leaking the underlying server's IP address.
The Tor Project has released a security update for the Tor Browser on Mac and Linux to fix a vulnerability that leaks users' real IP addresses.