Crowdstrike figured out by hiring an investigator who declared it had to be done inside the building:
Risk and Repeat:
Was the DNC hack an inside job?
Rob Wright Site Editor Aug 23, 2017 Related Podcasts Risk & Repeat:
Kaspersky Lab removed from GSA Schedule 70 Risk & Repeat: Comey warns of more election hacking Risk & Repeat:
US accuses Russia of state-sponsored cyberattacks In this week's Risk & Repeat podcast, SearchSecurity editors examine claims from intelligence veterans that the DNC hack was an inside job, and not the work of Russian hackers. 00:0032:39 Podcast A group of veteran intelligence officials presented a new theory about the Democratic National Committee hack, but the technical evidence behind it appears to be lacking.
(not really)
The group, known as Veteran Intelligence Professionals for Sanity (VIPS), recently published an open letter to President Donald Trump arguing that the DNC hack was not perpetrated by Russian hackers, but instead by an insider threat. The DNC hack inside job theory circulated over the last year, but it hadn't carried much weight, if any, before the VIPS report.
The organization claimed that, based on technical evidence provided by two independent security researchers, it was determined that the download of the nearly 20,000 emails from the DNC was performed at a speed of 22.7 megabytes per second (roughly 180 megabits per second).
VIPS and its security researchers argue that speed was simply too fast for a remote network connection and, therefore, the data must have been copied locally onto an external storage device, like a USB drive.
In addition to arguing that the DNC hack was an inside job, VIPS made the explosive claim that Russian fingerprints were generated to blame the incident on Russian state-sponsored hackers.
http://searchsecurity.techtarget.com/podcast/Risk-Repeat-Was-the-DNC-hack-an-inside-job
And this one: CrowdStrike, The DNC’s Security Firm, Was Under Contract With The FBI
CrowdStrike has brought on board senior FBI executives, such as Shawn Henry, former executive assistant director (EAD) of the FBI's Criminal, Cyber, Response and Services Branch, and Steve Chabinsky, former deputy assistant director of the FBI's Cyber Division. CrowdStrike has received $256 million in funding from Warburg Pincus, Accel Partners, and Google Capital.