Award-winning Guardian journalist Luke Harding says paragraphs of his writing mysteriously disappeared when he was working on his latest book, "The Snowden Files: The Inside Story of the World's Most Wanted Man." "I wrote that Snowden's revelations had damaged U.S. tech companies and their bottom line. Something odd happened," wrote Harding in The Guardian. "The paragraph I had just written began to self-delete. The cursor moved rapidly from the left, gobbling text. I watched my words vanish."