A cluster of hacking tools developed by the NSA have been acquired by a private group called ShadowBrokers. ShadowBrokers are planning on selling them to the highest bidder.
"[One] tool allows the NSA to execute “man-in-the-middle” attacks, which intercept traffic on a network as it’s traveling from its origin to its destination. The agency used it to redirect users who think they’re browsing safe websites to NSA-run servers that infect their computers with malware—and then back to their destination before they know what happened. "
Read more:
http://www.theatlantic.com/technology/archive/2016/08/yup-the-nsa-got-hacked/496643/
https://theintercept.com/2016/08/19/the-nsa-was-hacked-snowden-documents-confirm/