Group claims to hack NSA-tied hackers, posts exploits as proof
Source: Dan Goodin
Affiliation: Ars Technica
This article tells the story of a hacking group called the Shadow Brokers that claimed to have hacked the NSA's hacking team. It is unclear if the "hacked" data that was released is authentic. However, this even is significant either way--either the NSA was truly hacked, or a significant amount of work was put into fabricating this hack.