February 4, 2016: A handful of publicly released Clinton emails make indirect or veiled references to undercover CIA officers.

For instance, a CIA officer is referred to as a “State” Department official, with the quote marks suggesting the person is not actually a diplomat. Another email refers to “OGA,” which stands for “other government agency” and is a common pseudonym within government circles for the CIA. NBC News notes, “The messages at issue are part of a longstanding pattern of senior officials at the State Department and other government agencies trying to talk around classified information over email, sometimes unsuccessfully.” (NBC News, 2/4/2016)