They did NOT. They said they did, but when taken to court, they had to admit under oath that they had NO evidence to back up that claim.

Again I share a link to a court proceeding, with quotes from Crowdstrike president Shawn Henry admitting they had no evidence. From the article:

- "There are times when we can see data exfiltrated, and we can say conclusively. But in this case it appears it was set up to be exfiltrated, but we just don’t have the evidence that says it actually left."

- "There’s not evidence that they were actually exfiltrated. There's circumstantial evidence but no evidence that they were actually exfiltrated."

- "There is circumstantial evidence that that data was exfiltrated off the network. … We didn't have a sensor in place that saw data leave. We said that the data left based on the circumstantial evidence. That was the conclusion that we made."

- "Sir, I was just trying to be factually accurate, that we didn't see the data leave, but we believe it left, based on what we saw."

- Asked directly if he could "unequivocally say" whether "it was or was not exfiltrated out of DNC," Henry told the committee: "I can't say based on that."

https://www.realclearinvestigations.com/articles/2020/05/13/hidden_over_2_years_dem_cyber-firms_sworn_testimony_it_had_no_proof_of_russian_hack_of_dnc_123596.html

I'm right. You're wrong.