alt Hacker NewsThe most interesting detail about the whole XKeyscore story is that it was apparently not leaked by Snowden
https://www.schneier.com/blog/archives/2014/07/nsa_targets_p...
https://www.reuters.com/article/opinion/commentary-evidence-...
https://www.theguardian.com/us-news/2014/oct/11/second-leake...
It is possible that the "second source" and the shadow brokers are one and the same.
https://www.electrospaces.net/2017/09/are-shadow-brokers-ide...
https://www.emptywheel.net/2017/09/15/shadow-brokers-and-the...
And here's an interesting tidbit about a possible link between TSB and Guccifer 2.0
https://www.emptywheel.net/2020/11/01/show-me-the-metadata-a...
The Guardian sourced information about it to Snowden's leaks in 2013. What makes you think it's from a separate leaker, and that it's the same leaker as the "shadow brokers"? All I see is conjecture in those links.