Microsoft-owned Skype is leaking sensitive user data, including internal and external IP addresses and TCP ports. The issue has been publicly disclosed and I've confirmed that a web-based tool is ...

While an IP address can reveal a user's city or country of origin, it doesn't provide more specific information. But it can be used to potentially track down users -- i.e., in litigation. Roger Cheng ...

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. Denis Simonov, a security researcher, who is also known as ...