William Binney

https://en.wikipedia.org/wiki/William_Binney_(intelligence_official)

William Edward Binney is a former intelligence official with the United States National Security Agency (NSA) and whistleblower. He retired on October 31, 2001, after more than 30 years with the agency.

He was a critic of his former employers during the George W. Bush administration, and later criticized the NSA's data-collection policies during the Barack Obama administration. He dissented from the view that Russia interfered with the 2016 US election. More specifically, he was critical of the view that Russia hacked the DNC server.