To label a program conceived in 2007 that declared as its purpose the tracking of “every user visible” on the Internet, collected data from over a trillion Web events in a repository called the Black Hole, and targeted sites broadcasting recitations of the Qur’an, the UK Government Communications Headquarters chose the name Karma Police, after a song by the band Radiohead whose chorus is: “This is what you’ll get / when you mess with us.” 

“Secretary Morrice did this day in the House, when they talked of intelligence, say that he was allowed but £700 a year,” wrote Samuel Pepys in his diary in 1668, “whereas, in Cromwell’s time, he did allow £70,000 a year for it; and was confirmed therein by Colonel Birch, who said that thereby Cromwell carried the secrets of all the princes of Europe at his girdle.”

Charles d’Éon de Beaumont went to Russia in 1755 as a secret correspondent of French king Louis XV. Disguised as a woman, he obtained an appointment as reader to a Romanov empress; he returned for a mission the next year dressed as a man. By the 1770s speculation about his gender reached such fervor that odds were quoted by London brokers. An 1810 postmortem finally confirmed that he was anatomically male; Marie Cole, his companion of fourteen years, reportedly “did not recover from the shock for many hours.”

New York Giants pitcher Christy Mathewson wrote in 1912 that he had heard the Philadelphia Athletics “had a spy” who stole signs and “tipped the batters by raising and lowering an awning a trifle.” In Philadelphia for the World Series the year before, Mathewson had looked for the culprit. “In the enemy’s camp, I kept watching the windows of the houses just outside the park for suspicious movements,” he wrote. “But I never discovered anything wrong.”

Concerned about pigeons carrying military communications, German troops in occupied Belgium during World War I would shoot at overhead flocks. Such fears had not abated by World War II, when the British government ordered a systematic slaughter of pigeons throughout the UK, and inmates at British and Australian interment camps were banned from approaching birds on compound grounds.