Three Japanese naval officers who swapped pornography on their computers may have leaked information Japan's missile defence system by mistake.

A navy officer married to a Chinese woman was found to have taken home a computer disk containing information about the high-tech Aegis radar system.

The three were copying porn onto disks that were connected to the Aegis system and had data relating to it.
According to Reuters, Police think that there must have been more senior officers involved because none of the three were authorized to access the confidential information contained on the disks.

The United States navy also uses the Aegis system. More here.