In the 1970s, diplomats at the Canadian embassy in Moscow heard typewriters clicking… even when the room was empty. In this chilling Phantom Bytes bonus episode, we unravel the true story of Soviet-engineered typewriters modified to transmit every keystroke—an early form of hardware-based surveillance. From Cold War sabotage to modern firmware implants and invisible keyloggers, we explore how trusted devices can become silent traitors, one keystroke at a time.