U.S. intelligence agencies intercepted an encrypted Iranian signal that federal officials believe could be linked to the activation of dormant operatives inside the United States, according to threat ...

As national security services warn that Russian hackers are currently engaged in new global attacks against WhatsApp and Signal users, here’s how to stay safe.

Almost immediately after news broke that US government officials had inadvertently shared war plans with a journalist last week, misinformation began to fly. Much of it had to do with the inner ...