How The Intercept Outed Reality Winner

Today, The Intercept released documents on election tampering from an NSA leaker. Later, the arrest warrant request for an NSA contractor named "Reality Winner" was published, showing how they tracked her down because she had printed out the documents and sent them to The Intercept. The document posted by the Intercept isn't the original PDF file, but a PDF containing the pictures of the printed v

[dowhile]

恐ろしい恐ろしい

[ninoseki]

すごい　こんな解析できるんだ・・・

[rjj]

最近のプリンタはほとんど見えない黄色いドットのパターンで日時と場所をプリントしている。白黒プリンタと白黒スキャナを使うべし、と。