Top officials from the Trump administration mistakenly included journalist Jeffrey Goldberg in an encrypted chat on the Signal messaging app, discussing military strategies against Yemen's Houthi rebel group. This incident has led to calls from Democratic and some Republican lawmakers for a congressional investigation into a potential security breach. Goldberg reported being added to the chat on March 13, which aimed to coordinate U.S. military responses to Houthi attacks on shipping in the Red Sea. The inclusion of an outsider in the chat raises concerns about the protocols for sharing classified information on commercial messaging platforms. Under U.S. law, mishandling classified information can result in criminal charges, although it is unclear if any laws were violated in this case. Signal is known for its secure messaging capabilities, utilizing end-to-end encryption, and does not track or store user data beyond basic account information. The app has gained popularity among privacy advocates, journalists, and government organizations.