"On May 30, a group of cybersecurity researchers launched a crowdfunding campaign in the hopes of raising $25,000 with which they were planning to pay a hacker group called the Shadow Brokers for hacking tools that were supposedly taken from the NSA. The effort raised $3,906.62 in 36 hours. However, the campaign was canceled. The cybersecurity group later decided that buying these tools from a criminal organization could raise a lot of legal issues.
Before the group could go any further with this bid, lawyers and legal experts warned the organization that it would run into serious trouble by buying stolen hacks from a criminal organization linked with WannaCry, the latest cyber epidemic that affected millions of Windows users worldwide. The group then decided to cancel the crowdfunding campaign."
https://btcmanager.com/shadow-brokers-response-team-cancels-its-crowdfunded-bid-for-nsa-exploit-tools/This is the first time that I heard this news. I think this is too risky indeed and the assurance that the hackers will give you all the tools that they stolen from NSA is zero.