Securiosity: What is a 'leaking sinkhole?'

In April, a small agency under the DOD released a bulletin that said a Chinese hacker group had been stealing data from cleared contractors via a leaked sinkhole. Shannon Vavra dug into that bulletin, and found the story behind it to be a very confusing mystery. In this episode, she talks about it with CyberScoop Editor-in-Chief Greg Otto.