https://peertube.eqver.se/videos/watch/a4e7e39e-9c05-427f-8c27-d54a08ea78a5 A DEF CON 32 talk where researchers Elonka Dunin and Klaus Schmeh explore a unique system of secret communication from the mid-19th century. They analyze a series of encrypted advertisements published in The Times in the 1850s, addressed to Captain Richard Collinson, who was involved in the search for Sir John Franklin’s lost Arctic expedition. The speakers explain how the cipher worked — based on the Royal Navy’s signal book — how such messages enabled global communication, and how researchers managed to decode them more than a century later. Fri, 24 Jul 2026 11:24:33 GMT https://validator.w3.org/feed/docs/rss2.html PeerTube - https://peertube.eqver.se https://peertube.eqver.se/client/assets/images/icons/icon-512x512.png https://peertube.eqver.se/videos/watch/a4e7e39e-9c05-427f-8c27-d54a08ea78a5 All rights reserved, unless otherwise specified in the terms specified at https://peertube.eqver.se/about and potential licenses granted by each content's rightholder.