jun 15, 2016 - "Guccifer 2.0" [later revealed to be a moniker of Russian intelligence officers [1]] publicly claims responsibility for the DNC hack [2]

Description:

[1] https://www.nytimes.com/2018/07/15/us/politics/guccifer-russia-mueller.html

OUTLET{The New York Times}
TITLE{Tracing Guccifer 2.0’s Many Tentacles in the 2016 Election}
ARCHIVED{https://archive.ph/yGmq5}
DATE{07/15/2018}
AUTHOR{David E. Sanger}
AUTHOR{Jim Rutenberg}
AUTHOR{Eric Lipton}

[2] https://www.washingtonpost.com/world/national-security/guccifer-20-claims-credit-for-dnc-hack/2016/06/15/abdcdf48-3366-11e6-8ff7-7b6c1998b7a0_story.html

OUTLET{The Washington Post}
TITLE{‘Guccifer 2.0’ claims credit for DNC hack}
ARCHIVED{https://archive.ph/0x5uL}
DATE{06/15/2016 22:14:00}
AUTHOR{Ellen Nakashima}

https://intelligence.house.gov/uploadedfiles/sc8.pdf [see pdf 10]

ENTITY{US House of Representatives Permanent Select Committee on Intelligence}
DATE{12/12/2017 11:01:00}
TITLE{Interview of Samuel H. Clovis, Jr.}
NOTE{Transcript}
ARCHIVED{https://web.archive.org/web/20220417205221/https://intelligence.house.gov/uploadedfiles/sc8.pdf}