His academic background is in computer engineering, and he was a signals specialist in the U.S. Air Force, before arriving at his present specialty, which has occupied his professional career.
Madory remained in the same Director of Internet Analysis position throughout each of these transitions, before leaving Oracle to join Kentik in November 2020, in much the same role.
His investigation revealed that the ALBA-1 undersea fiber cable, which had been run from Venezuela to Cuba by the Venezuelan government in 2010 and 2011, had been activated following an unexplained dormancy of two years.
On January 20, 2021, Madory observed a previously unknown Delaware shell company launching a process which would ultimately BGP advertise more than 175 million IPv4 addresses.
Madory's analysis identified a stranger situation, though: the shell company, "Global Resource Systems," was in fact contracted to the DoD, but was one of a family of shell companies controlled by Rodney Joffe which were exposed by the indictment of Michael Sussmann and depositions conducted by Alfa-Bank, ongoing in parallel at the time of the apparent hijacking.