SCOOP #Durham: @CBSNews obtains 94-page declassified FBI spreadsheet, widely cited by IG Horowitz, but not public until now. Recently released to Senate investigators, the FBI spreadsheet was part of a broader effort to corroborate the Steele dossier claims.

While lightly redacted, the bureau spreadsheet shows the FBI relied heavily on media reporting to back up claims about Carter Page, Paul Manafort, and others.  IG Horowitz faulted the FBI over lack of corroboration + evidence of circular reporting.

IG Horowitz page 5 found dossier author Christopher Steele spoke to the Yahoo news reporter prior to publication of a September 23 article. The FBI spreadsheet cites the SAME article on page 51 as supporting evidence.  IG Horowitz also faulted the FBI for using the Yahoo

reporting in the @carterwpage FISA + then not correcting the court record once the connection with Steele was known. Tim Gill Sr, a former senior FBI intelligence officer, told CBS that the reliance on media reporting was not standard. “Any effort to corroborate a report

should include a variety of intelligence sources, including imagery intelligence, human intelligence, signals intelligence as well as clandestine intelligence collection platforms for verification," Gill said. “You don't rely on media reporting.”