Using a historical analogy as a research strategy: histories of the sea and cyberspace, comparison, and locating the analogy in time -- History of the loosely governed sea between the 16th-19th century: from the age of privateering to its abolition -- Brief history of cyberspace: origins and development of (in-)security in cyberspace -- The sea and cyberspace: comparison and analytical lines of inquiry applying the analogy to cybersecurity -- Cyber pirates and privateers: state proxies, criminals, and independent patriotic hackers -- Cyber mercantile companies conflict and cooperation.