Yahoo secretly scanned customer emails for US intelligence
It is not known what information intelligence officials were looking for, only that they wanted Yahoo to search for a set of characters
Yahoo Inc last year secretly built a custom software program to search all of its customers’ incoming emails for specific information provided by US intelligence officials, according to people familiar with the matter.
The company complied with a classified US government directive, scanning hundreds of millions of Yahoo Mail accounts at the behest of the National Security Agency or FBI, said two former employees and a third person apprised of the events.
Some surveillance experts said this represents the first case to surface of a US Internet company agreeing to a spy agency’s demand by searching all arriving messages, as opposed to examining stored messages or scanning a small number of accounts in real time.
It is not known what information intelligence officials were looking for, only that they wanted Yahoo to search for a set of characters. That could mean a phrase in an email or an attachment, said the sources, who did not want to be identified.
Reuters was unable to determine what data Yahoo may have handed over, if any, and if intelligence officials had approached other email providers besides Yahoo with this kind of request.
According to the two former employees, Yahoo Chief Executive Marissa Mayer’s decision to obey the directive roiled some senior executives and led to the June 2015 departure of Chief Information Security Officer Alex Stamos, who now holds the top security job at Facebook Inc.
“Yahoo is a law abiding company, and complies with the laws of the United States,” the company said in a brief statement in response to Reuters questions about the demand. Yahoo declined
any further comment.
Through a Facebook spokesman, Stamos declined a request for an interview.
The NSA referred questions to the Office of the Director of National Intelligence, which declined to comment.
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