Senior officials from the Trump administration accidentally shared sensitive military discussions on the encrypted messaging platform Signal, leading to calls from Democratic lawmakers for a congressional investigation. A journalist was mistakenly included in a group chat, giving him access to confidential conversations about military operations in Yemen. Signal is an open-source messaging platform known for its end-to-end encryption and prioritizes user privacy by retaining minimal data. User chats and contacts are stored locally on devices, and the app allows for automatic deletion of conversations. Signal operates independently of government servers and does not use governmental encryption methods. Cybersecurity expert Rocky Cole stated that the risk of discussing sensitive information on Signal is less about its security and more about the potential compromise of the mobile device itself.