Hillary Clinton's Worst Friend , https://www.bloomberg.com/view/articles/2016-10-14/sidney-blumenthal-is-hillary-clinton-s-worst-friend

"As the Benghazi investigation showed, he was earning around $10,000 a month for a job at the Clinton Foundation. Blumenthal also was paid by the nonprofit Media Matters, which attacks Clinton's conservative media opponents."

Check out the article, it has links to many great articles and sources.

Some of you may have acquired more information on Blumenthal, but so far I didn't find a submission on this POI. His name is mentioned on Voat only two times, as far as I know, both very recent: 1. on v/pizzagate , concerning the new FBI release of Clinton documents https://voat.co/v/pizzagate/1548942; 2. on v/politics , same subject https://voat.co/v/politics/1558622 .

Guccifer 'hacked' (he really entered by guessing the answer to the security question) Blumenthal's AOL account, after which he was able to access Clinton's emails. Read Guccifer's story here: http://www.foxnews.com/politics/2016/05/04/romanian-hacker-guccifer-breached-clinton-server-it-was-easy.html

A site not mentioned here, but probably an important source for further research: https://cryptome.org/ , published some of Guccifer's releases. You will find there, among a variety of stuff, Blumenthal's 4,908 contacts, which include ' [email protected] ', Alefantis' private e-mail adress.

Blumenthal and Alefantis were among the hosts of Brock's book party at Tony Podesta's house, in september 2015: http://www.politico.com/story/2015/09/kgb-brock-book-party-213983

This is, so far, all I can share about Blumenthal and his ties to the Clinton Foundation, Brock and Alefantis, but I think Blumenthal could lead to more information.