
thumb|280px|Header of an unclassified Department of State telegram with the "SIPDIS" tag marked in red
via Wikipedia infobox
thumb|280px|Header of an unclassified Department of State telegram with the "SIPDIS" tag marked in red
The Secret Internet Protocol Router Network (SIPRNet) is "a system of interconnected computer networks used by the U.S. Department of Defense and the U.S. Department of State to transmit classified information (up to and including information classified SECRET) by packet switching over the 'completely secure' environment". It also provides services such as hypertext document access and electronic mail.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).