Apple Inc. (AAPL) - Get Report received between 13,250 and 13,499 U.S. government national security requests for data in the first half of the year, which is the highest yet for Apple, the company said in a 19-page transparency report late Thursday, Sept. 28.

That figure more than doubles the number of requests Apple got during the first half of 2016, which was between 5,750 and 5,999. The 2017 requests affected between 9,000 and 9,249 accounts, the company said.

The data requests come from National Security Letters and the Foreign Intelligence Surveillance Act. Though it isn't required for firms to disclose the information, many technology companies including Alphabet's (GOOGL) - Get Report Google and Facebook Inc. (FB) - Get Report choose to do so voluntarily.

Google also released a transparency report Thursday, stating it received as many as 499 requests affecting between 1,000 and 1,499 accounts.

Apple stock traded slightly down premarket Friday. Google shares were flat.

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