What do you do when you discover who violated the law by leaking a classified document? You arrest them.
“Contractor Charged in Leak,” The Wall Street Journal, June 6, 2017 A4. Reality Winner, an employee of a contractor for the NSA, was arrested and charged for leaking a classified document to the news media. A criminal offense.
Interesting story of how the government found out. A news agency provided a copy of the document and requested the government to confirm its accuracy. The government could tell from looking at the copy that it had been folded, and concluded someone printed it out and sneaked it out. IT logs showed six people had printed it out. The computer of one of them showed email contact with a news agency. When questioned, Ms. Winner fessed up.
Common themes: the NSA needs to watch the employees of its contractors carefully; IT has a record, somewhere; criminals get arrested; a newspaper can inadvertently disclose confidential sources.