Harold T. Martin

As of May 2021, Martin is housed at Federal Medical Center, Devens, a facility for federal inmates with ongoing long term physical or mental health treatment needs, located in Devens, Massachusetts.

On July 19, 2019, Martin was sentenced to nine years in prison. At sentencing, Martin apologized before Judge Bennett, and said he recognized that taking the data was wrong. Bennett remarked that the case "has given me great pause," but agreed to impose the nine-year term negotiated between the parties, with three years subtracted for time already served.

Martin agreed to plead guilty in December 2017. This was scheduled to occur on January 22, 2018. Martin instead pled not guilty. According to the court's memorandum opinion dated December 3, 2018, Martin's trial date was scheduled for June 17, 2019. On March 17, 2019, Martin agreed to plead guilty to Willful Retention of National Defense Information (18 U.S. Code § 793). The agreement ultimately called for nine years in prison, three years supervised release and a fine of up to $250,000, which represent the maximum punishment recommended for that crime under federal sentencing guidelines.

While attempting to trace the source of the Shadow Brokers leak in the summer of 2016, the Federal Bureau of Investigation (FBI) was alerted by the NSA to an internet post made by Martin, who allegedly communicated via the Twitter account @HAL_999999999. Martin used Twitter to contact Kaspersky Lab, a Russian cyber-security firm, which in turn alerted the National Security Agency. The FBI originally believed Martin to be the source of the Shadow Brokers thefts of NSA hacking tools, and used the information provided by Kaspersky researchers to execute a search warrant on Martin's modest residence in suburban Glen Burnie, Maryland, deploying a SWAT team, setting up roadblocks, breaking down the front door with a battering ram, and deploying flash bangs inside the house before removing Martin at gunpoint. Instead, the FBI and Maryland State Police reported discovering over 50 terabytes of classified data within the residence, in an unlocked shed, and within Martin's personal vehicle.

Martin was charged by the United States Department of Justice with "willful retention of national defense information". Martin entered a plea of not guilty. In an October 2016 hearing at the United States District Court for the District of Maryland, Magistrate Judge A. David Copperthite sided with the prosecution in agreeing that Martin was a flight risk and would not be released pending trial.

Martin earned a bachelor's degree in economics and math from the University of Wisconsin-Madison in 1989, and commissioned as a Surface Warfare Officer in the U.S. Navy upon graduation. He served in the Navy from 1987 until 2000, deploying to the Gulf during Operation Desert Storm. During the later part of his military service he transferred to a part time role in the Navy Reserve, which was when he first received access to classified data. Upon leaving the military, Martin remained in the D.C. metro area, continuing his education with a master's degree in information systems from George Mason University in 2004, and maintaining his security clearance working for government contractors including Computer Sciences Corporation and Tenacity Solutions. He was later hired by defense staffing giant Booz Allen Hamilton, tasked to the National Security Agency from 2012 to 2015, during which time he worked with the elite Tailored Access Operations unit, albeit in a support capacity. In 2015, while still a contractor for Booz Allen, Martin moved to the Pentagon's Office of Acquisition, Technology and Logistics (AT&L), working at a Department of Defense facility in Alexandria, Virginia up until his arrest in 2016.

Harold Thomas Martin III (born November 1964) is an American computer scientist and former contractor for Booz Allen Hamilton who pleaded guilty to illegally removing 50 terabytes of data from the National Security Agency. The United States government reportedly failed to note or effectively respond to a number of issues with Martin's security practices and behaviors over a period of 10 to 20 years. The motive for the crime has been a subject of debate, investigators reportedly had difficulty determining if Martin was engaged in conventional espionage or digital hoarding since throughout his decades of work, he appeared not to have ever accessed any of the files once he removed them from government facilities.