Telegram will add a warning for proxy links after reports showed they can expose user IP addresses with a single click, bypassing VPN or privacy settings.

A 25-year-old Bigfork, Montana man, Jeremiah Daniel Starr, used over 50 phone numbers and a VPN to harass a victim he called his "best friend," even staging a fake shooting. Learn more about the FBI investigation that traced 1,100 IP addresses to bring him to justice.