Gordon Lyon is the creator of Nmap, an open-source network scanning tool widely used for network discovery and security auditing.
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https://www.linkedin.com/in/gordon-lyon/ https://en.wikipedia.org/wiki/Gordon_Lyon https://www.amazon.com/stores/Gordon-Fyodor-Lyon/author/B004NGIFZ4?ref=ap_rdr&isDramIntegrated=true&shoppingPortalEnabled=true