Doug Madory is an American Internet routing infrastructure expert, who specializes in analyzing Internet Border Gateway Protocol routing data to diagnose Internet routing disruptions, such as those caused by communications fiber cable cuts, routing equipment failures, and governmental censorship.
13 Facts About Doug Madory
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Doug Madory's academic background is in computer engineering, and he was a signals specialist in the US Air Force, before arriving at his present specialty, which has occupied his professional career.
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Doug Madory received a master's degree in computer engineering from Dartmouth College in 2006.
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Doug Madory joined Internet intelligence and technical analysis firm Renesys in 2009.
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Doug 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.
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Doug Madory is best known for the discoveries that are the product of his Internet routing analysis: sometimes of interesting new phenomena on the Internet and sometimes of malfeasance online.
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In 2013, Doug Madory observed that Internet connection speeds in Cuba had suddenly improved.
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Doug Madory's 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.
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Doug Madory observed daily nationwide Internet shutdowns in Iraq for three hours each morning for several consecutive days, on the same dates in 2014 and 2015, and discovered that the government had mandated the shutdowns to coincide with grade school final examinations, in order to hamper test cheating.
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Doug Madory has subsequently observed the same events in Syria.
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In 2016, Doug Madory collaborated with cybersecurity journalist Brian Krebs in an investigation of the Mirai botnet and DDoS attacks.
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On January 20,2021, Doug Madory observed a previously unknown Delaware shell company launching a process which would ultimately BGP advertise more than 175 million IPv4 addresses.
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Doug 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.