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Service years. 1878–1909; 1909–1923. Rank. Captain. Chief of the Secret Intelligence Service. Operations. World War I. Captain Sir Mansfield George Smith-Cumming KCMG CB (1 April 1859 [3] – 14 June 1923) was a British naval officer who served as the first chief of the Secret Intelligence Service (SIS).
Cumming's tenure as chief established many of the traditions and trappings of the office. Among the best known of these, he signed documents with the initial "C" in green ink, a custom upheld throughout the history of the service. One tradition that was not maintained was the selection of the Chief from the ranks of the Royal Navy.
Invisible ink, also known as security ink or sympathetic ink, is a substance used for writing, which is invisible either on application or soon thereafter, and can later be made visible by some means, such as heat or ultraviolet light. Invisible ink is one form of steganography .
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Northland Communications (formerly known as Northland Cable Television) was an American cable television, telephone and internet service provider with systems in various portions of the United States. Northland Communications currently owns and operates smaller-market cable systems in Alabama, California, Georgia, Idaho, North Carolina, South ...
Suddenlink was an American telecommunications subsidiary of Altice USA trading in cable television, broadband, IP telephony, home security, and advertising. Prior to its acquisition by Altice, the company was the seventh largest cable operator with 1.5 million residential and 90,000 business subscribers.
Greenback (1860s money) Greenbacks were emergency paper currency issued by the United States during the American Civil War that were printed in green on the back. [1] They were in two forms: Demand Notes, issued in 1861–1862, [1] and United States Notes, issued in 1862–1865. [2] A form of fiat money, the notes were legal tender for most ...
Green is the founder of the environmental technology blog EcoGeek, which evolved into Complexly, an online video and audio production company of which he was the CEO until late 2023. Green also hosts the podcasts Dear Hank & John and Delete This with his brother and wife respectively, along with the podcast SciShow Tangents.