'It's not a complicated process': How it's possible to examine 650,000 emails in 8 days
Thomson Reuters
The new emails were uncovered after investigators seized devices they suspected Weiner, the estranged husband of top Clinton aide Huma Abedin, used to exchange sexually explicit messages with underage girls.
The reported 650,000 emails were reviewed over eight days and yielded no new evidence that compelled the FBI to change its initial decision, made in July, not to recommend charges against Clinton.
Many of the emails examined were apparently duplicates of those FBI agents had already reviewed when they investigated her private server between August 2015 to July 2016, since the emails were either sent or received to Clinton's private email address.
Comey wrote on Sunday that he and his team had been "working around the clock" to process the newly discovered emails, and that "we reviewed all communications that were to or from Hillary Clinton while she served as secretary of state."
AP
Still, Republican nominee Donald Trump and his supporters were quick to raise questions about how the FBI could have examined so many emails in what seemed like so little time.
"IMPOSSIBLE: There R 691,200 seconds in 8 days," one of Trump's advisers, retired Lt. Gen. Michael Flynn, tweeted on Sunday afternoon. "DIR Comey has thoroughly reviewed 650,000 emails in 8 days? An email / second? IMPOSSIBLE."
Trump echoed Flynn's comments later during a rally in Michigan.
"You can't review 650,000 new emails in eight days!" he said.
REUTERS/Gary Cameron
Cybersecurity experts disagree, however.
"I see no problem with the FBI completing a search of this size in a week," Dr. John Michener, chief scientist at cybersecurity firm Casaba Security, told Business Insider on Monday.
He added: "The vast majority of the emails are likely to be duplicates of emails that the FBI has already seen and evaluated. Those can be trivially eliminated. After that I would expect a keyword search to loop for things of interest."
On Twitter, former National Security Agency contractor-turned-leaker Edward Snowden said that the process could be achieved by "old laptops" in hours or even minutes.
"Drop non-responsive To:/CC:/BCC:, hash both sets, then subtract those that match," Snowden said, responding to a question posed by CUNY Journalism School professor Jeff Jarvis about how long it would take the NSA "to dedupe 650k emails."
A former FBI agent corroborated those assessments in an interview with Wired, noting that it "you can triage a dataset like this in a much shorter amount of time."
"We'd routinely collect terabytes of data in a search," said the agent, who requested anonymity. "I'd know what was important before I left the guy's house."
The FBI has not revealed the exact process by which it sifted through all of the relevant emails. But most experts agree that the agents probably didn't even need the full eight days to do so.
"Given those emails, and a list of known email accounts from Hillary and associates, and a list of other search terms, it would take me only a few hours to reduce the workload from 650,000 emails to only a couple hundred, which a single person can read in less than a day," cybersecurity consultant Rob Graham wrote in a blog post on Sunday.
Michener, of Casaba Security, largely agreed.
"This is a well developed area for both the FBI and the legal industry in general," Michener told Business Insider. "It's not a complicated or improvised process. I'm sure the FBI already had all of its search terms set up in a database, so all they had to do was run them against the new data set. This is just a minor delta and totally reasonable for them to complete it in that span of time."
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