ROK Defense OPLAN My Be Compromised

If this is true, it's a BIG problem:

South Korea's military is investigating a cyber attack in which North Korean hackers may have stolen secret defence plans outlining Seoul and Washington's strategy in the event of war on the Korean peninsula.

The highly sensitive information, codenamed Oplan 5027, may have found its way into hostile hands last month after a South Korean officer used an unsecured USB memory stick to download it.

It reportedly contained a summary of military operations involving South Korean and US troops should North Korea conduct a pre-emptive strike or attempt to invade.