John David McAfee was a British-American computer programmer and businessman who in 1987 founded McAfee Associates and created the first commercial antivirus software. He ran twice for the U.S. presidency as the Libertarian Party nominee and was found dead in a Spanish prison on June 23, 2021, hours after a court approved his extradition to the United States on tax evasion charges.
The name McAfee still means two very different things today. It refers to John McAfee, the colorful programmer whose VirusScan pioneered consumer antivirus in the late 1980s. It also refers to McAfee Corp., a separate company headquartered in San Jose that protects more than 600 million devices worldwide as of 2026. Our team dug through court records, corporate filings, and primary reporting to put both stories in one place, because most articles cover only one and leave readers confused.
I have spent years covering cybersecurity products and consumer software, and the John McAfee story sits at the strange intersection of tech history and true crime. This guide walks through his full life, his company’s journey after he left, and the questions readers ask us most about both. If you want a quick takeaway up front, here it is: McAfee the man disavowed McAfee the product for the last decade of his life, while McAfee the company kept growing long after his name became a liability.
John McAfee’s Early Life Started in Cinderford, England in 1945
John David McAfee was born on September 18, 1945, in Cinderford, Gloucestershire, England. His American father, Don McAfee, was serving in the U.S. Army stationed in Britain during the final months of World War II, and his mother, Joanna McAfee, was English. The family moved to Salem, Virginia, when John was very young, and he grew up as an American kid in the Appalachian foothills.
McAfee’s childhood was not stable. His father, a heavy drinker, walked out on the family when John was a teenager, and his mother remarried. He later described his early years as emotionally difficult, and he channeled that energy into academics and alcohol in roughly equal measure. By the time he finished high school he had developed the lifelong habits of intense focus and intense excess that would define his public life decades later.
He enrolled at Roanoke College in Salem, Virginia, and graduated in 1967 with a bachelor’s degree in mathematics. He later told interviewers that his professors considered him a middling student at best, but math gave him the logical foundation he would lean on when he first sat in front of a computer. Right out of college he took a job punching Fortran cards at NASA, working on the Apollo-era space program in his first taste of professional programming.
Throughout the late 1960s and 1970s, McAfee drifted through a long list of programming and consulting jobs. He worked at Univac, the systems division of Xerox, computer consultancy CSC, Booz Allen Hamilton, and Lockheed. Each job taught him a different layer of the computer industry, from mainframes to early microcomputers. By the time the personal computer revolution kicked off in the early 1980s, McAfee had logged roughly fifteen years of professional coding experience, a CV that very few of his antivirus peers could match.
The 1986 Brain Virus Sparked the Idea for McAfee Associates
The story of McAfee Associates really starts with a piece of malware called Brain. In January 1986, two Pakistani brothers, Basit and Amjad Farooq Alvi, wrote a boot sector virus that spread through floppy disks on IBM PCs. Brain was the first widely reported IBM PC virus, and the press coverage was intense for the era. McAfee, by then running his own small consulting business in Santa Clara, noticed something almost no one else did: the market was about to explode.
He bought a copy of Brain, reverse engineered it, and wrote a tool that could detect and remove it. At the time he was working out of his home office, not a corporate lab. He distributed the tool freely through electronic bulletin board systems and through user groups, and demand was immediate. Home users, small businesses, and corporate IT departments all wanted protection from a threat they had never heard of six months earlier.
McAfee realized he could not scale a free side project into a real company, so in 1987 he incorporated McAfee Associates in Santa Clara, California. The company’s first commercial product was VirusScan, and it shipped as shareware before becoming a paid subscription. Within two years VirusScan was the most recognized antivirus brand in the United States, mostly because McAfee had a knack for the kind of media attention that turned a small software firm into a household word.
McAfee Associates Released VirusScan and Built a Fortune by 1989
McAfee Associates grew explosively between 1987 and 1989. The turning point came in 1989, when the press became obsessed with the predicted Michelangelo virus scare, a forecast that millions of PCs would be wiped on March 6, the birthday of the Renaissance artist. McAfee made himself the loudest voice in the room, warning consumers and businesses to buy antivirus software before the supposed catastrophe.
Michelangelo turned out to be wildly overhyped. Estimates of damaged machines ranged from a few thousand to roughly the 5 million figure McAfee himself sometimes cited. But the marketing worked. Sales of VirusScan ballooned, McAfee Associates went public on NASDAQ in 1992, and John McAfee’s personal stake was briefly worth over $80 million on paper. He owned roughly 7.4 million shares at the peak.
By the early 1990s the company had moved its headquarters to San Jose, had signed distribution deals with IBM, and had expanded well beyond the original VirusScan product. McAfee, however, was no longer running day-to-day operations. He had stepped back from management after the IPO and was spending more time on personal projects than on the company. The partnership that had worked in the late 1980s started to fray in the early 1990s as the firm’s board pushed for steady enterprise growth and McAfee wanted to chase bigger, stranger ideas.
John McAfee Walked Away From His Company in 1994 and Sold His Stake
John McAfee resigned from McAfee Associates in 1994 and sold his remaining stake. The official reason cited personal reasons, and there was no public falling out with the board at the time. Privately, he later said he had grown tired of corporate life and wanted to pursue other ventures. He walked away from the company while it was still one of the dominant names in consumer antivirus.
The years right after his departure were messy. McAfee Associates went through several ownership changes, was eventually acquired by Network Associates in 1997, and the Network Associates brand was later simplified back to McAfee in 2004. By the time John McAfee had stopped identifying with the brand at all, the company had been bought by Intel in 2010 for roughly $7.68 billion and folded into a division Intel called Intel Security from 2014 to 2017.
The 2014 rebrand was the moment John McAfee publicly turned on the company that bore his name. He was quoted as saying he was not even allowed to use his own name in connection with antivirus software, and he regularly attacked the McAfee product on Twitter and in interviews throughout the rest of his life. The Intel-era rebrand eventually unwound, and Intel took McAfee private again in a joint venture with TPG Capital in 2016, before McAfee Corp. returned to the public markets in 2020 and was later acquired by the private equity firm Advent International in 2021.
McAfee Corp. Today Is Owned by Advent International and Sells AI Antivirus
McAfee Corp. is now a private company owned by an investor group led by Advent International, with the Symphony Technology Group also holding a stake. The acquisition closed in 2022 for roughly $4 billion, and the company is no longer publicly traded. Headquarters remain in San Jose, California, and the company continues to sell antivirus and identity protection products under the McAfee+ brand.
The current McAfee product lineup is far broader than the original VirusScan. It includes McAfee+ Premium, an all-in-one subscription that bundles antivirus, a VPN, identity monitoring, and credit protection. The company also offers the AI-powered McAfee Deepfake Detector, which the firm launched in 2024 to flag synthetic audio and video on consumer devices. Other current products include McAfee Total Protection for small businesses and a series of mobile security apps.
The bridge between the man and the company is the part most articles skip. John McAfee built McAfee Associates in 1987, left in 1994, and spent the next 27 years publicly feuding with the company that kept his name on the box. McAfee the company kept acquiring rivals, including Dr Solomon’s, Foundstone, SiteAdvisor, Skyhigh Security, and TunnelBear, and is now run as a private cybersecurity firm with no surviving ties to the founder beyond the brand itself.
McAfee Fled to Belize in 2008 and Became a Murder Suspect in 2012
After selling his stake in McAfee Associates, John McAfee spent years moving between Colorado, Texas, and various Caribbean islands. In 2008, as the global financial crisis wiped out most of his personal fortune, he settled in Belize, a small Central American country north of Guatemala. He set up a compound near the town of Orange Walk and began funding a series of research projects, including antibiotics research at a lab he called QuorumEx.
The Belize years are the strangest chapter of McAfee’s life. He amassed a small security detail, some of whom were former gang members, and he made enemies with local politicians after he refused to pay a reported bribe demand from a ruling party official. He also developed a public fascination with psychoactive drugs and posted videos of himself experimenting with substances including DMT and MDMA. The Belizean government raided his property in 2012 on suspicion of running a meth lab, although no charges were filed.
On November 11, 2012, Gregory Faull, a U.S. expatriate and McAfee’s neighbor in Orange Walk, was found shot to death in his home. Belizean police named McAfee as a person of interest. McAfee, who had been feuding with Faull over dogs, immediately fled the country. He eventually crossed into Guatemala, where he was arrested for illegal entry and spent time in detention before being returned to the United States. He was never charged with Faull’s murder, and the Belizean case went cold.
McAfee Ran for President Twice as a Libertarian in 2016 and 2020
McAfee got into politics in 2016, when he announced a run for the Libertarian Party nomination for U.S. president. He was an unusual candidate, running almost entirely through Twitter and YouTube rather than traditional campaign events. He finished third in the Libertarian primary behind Gary Johnson and Bill Weld, but his colorful speeches at the Libertarian convention in Orlando made him a recurring cable news guest for the rest of the election cycle.
McAfee ran again in 2020 and was briefly considered a serious contender. He had earlier founded his own party, the Cyber Party, in 2015 and ran a failed bid for the 2016 presidential nomination under the Cyber Party banner. He also sought the Libertarian nomination in 2020 but dropped out before the primary and endorsed Adam Kokesh. By the time he was in serious legal jeopardy, McAfee had largely withdrawn from active campaigning and was living abroad.
His political views blended libertarian economics, drug legalization, and full-throated cryptocurrency advocacy. McAfee became one of the loudest promoters of Bitcoin in the early 2010s and later promoted numerous initial coin offerings, or ICOs, in 2017 and 2018. The Securities and Exchange Commission later charged him with touting ICOs without disclosing that he was paid to promote them, an indictment that was still active when he died.
McAfee Was Arrested in Spain in 2020 and Indicted for Tax Evasion
In October 2020, McAfee was arrested in Barcelona by Spanish National Police at the request of the U.S. Department of Justice. He had been living aboard a yacht in international waters and had entered Spain to refuel. The indictment, unsealed after his arrest, charged him with tax evasion and willful failure to file tax returns for four years running, from 2014 through 2018. The U.S. government also charged him with money laundering through cryptocurrency promotions.
The Spanish National Court agreed in June 2021 to extradite him to the United States to face the charges. The ruling came after McAfee had spent roughly eight months in a Barcelona prison, and his lawyers immediately announced plans to appeal. Within hours of the extradition ruling, on June 23, 2021, prison staff found McAfee dead in his cell at the Brians 2 penitentiary near Barcelona. The official ruling was death by suicide.
The tax charges had been building for years. A 2019 IRS criminal complaint alleged that McAfee had used nominee accounts and cryptocurrency to hide income from the IRS, and that he had earned millions from speaking engagements, consulting, and the sale of the rights to his life story for the documentary Gringo: The Dangerous Life of John McAfee. The U.S. Attorney’s office in Nashville led the prosecution and continued to pursue related charges against members of his inner circle after his death.
John McAfee Died in a Barcelona Prison Cell on June 23, 2021
John McAfee was pronounced dead at age 75 in his cell at the Brians 2 prison on the outskirts of Barcelona. The Catalan Justice Department issued an autopsy report within weeks and concluded that the death was a suicide by hanging. The Spanish court later confirmed the ruling after a closed-door investigation. Janice McAfee, his wife at the time of his death, has publicly disputed the suicide finding and claimed that the United States wanted him silenced.
Conspiracy theories around the death multiplied within hours of the news breaking. Reddit threads, Telegram channels, and even a posthumous Twitter thread that appeared on McAfee’s own account all raised questions about the timing, the location, and the fact that Spain had just approved extradition. Theories cited McAfee’s well-documented $WHACKD tattoo, inked on his right forearm in 2019, which read $WHACKD alongside a single bitcoin denomination. He had said the tattoo was a prediction of his own death.
The official record stands: the Catalan court ruled suicide, and no homicide charges have ever been filed in connection with McAfee’s death. Whatever the truth, the U.S. government continued the prosecution against Janice McAfee and other associates after his death, and the family maintained a website with conspiracy material for several years before it was taken offline.
McAfee Claimed 47 Children and Saw His Net Worth Swing From $100M to $4M
John McAfee was married several times over the course of his life. His wives included Judy McAfee, who was with him during the McAfee Associates years, and Janice McAfee, who was his partner during the Belize, libertarian, and Spanish prison chapters. He had one confirmed daughter, Jessica McAfee, from his first marriage, and he publicly claimed to have fathered 47 children across multiple relationships over the years. That number was never independently confirmed.
His net worth swung wildly through his life. At the peak of McAfee Associates’ share price in the early 1990s, his stake was reportedly worth over $100 million. He sold most of it before the 2000 dot-com crash and reported a personal fortune of around $100 million in 2007. By 2009, after the global financial crisis hit Belizean real estate, he told reporters his net worth had collapsed to about $4 million. The figure was self-reported and never audited.
The financial collapse in 2008 was the catalyst for his move to Belize and, by his own account, the reason he spent the next decade pursuing cryptocurrency promotion. He was an early Bitcoin evangelist and once claimed to have predicted Bitcoin would reach $500,000 per coin by the end of 2020, a prediction that did not come true. Even with crypto wealth and ICO consulting, his estate was modest at the time of his death, and Janice McAfee said publicly that he had roughly nothing in the bank when he died.
Gringo and Running With the Devil Capture McAfee’s Legacy on Screen
Two feature-length documentaries are widely considered the definitive visual record of McAfee’s life. Gringo: The Dangerous Life of John McAfee, a Showtime documentary released in 2016, was filmed during his Belize years and includes interviews with McAfee himself, his then-girlfriend, and Belizean officials. Running with the Devil: The Wild Life of John McAfee, a Netflix documentary released in 2022, draws on additional footage and interviews with people who knew him during the libertarian and cryptocurrency periods.
McAfee also authored several books, including Computer Viruses, Worms, Data Diddlers, and Other Threats to Your System and The Secret of the Yamas: Spiritual Steps to Freedom. The Yamas book reflects the yoga and meditation practice he took up in his later years. He also wrote a 2018 memoir called No Domain, which covered his Belize experiences and his break with the company that bore his name.
McAfee’s industry legacy is bigger than his personal story. He was among the first to recognize that consumer antivirus could be a mass-market product. By the late 1990s, more than half of all personal computers shipped with McAfee or Norton preinstalled, and the basic model of scanning files for malware signatures, which McAfee Associates pioneered, became the template every antivirus company still uses. McAfee Corp. has credited him on its website for that contribution, even as his later life made him an awkward figure for the brand.
Frequently Asked Questions
Who is John McAfee?
John David McAfee was a British-American computer programmer and businessman who in 1987 founded McAfee Associates and created the first commercial antivirus software, VirusScan. He ran for U.S. president twice as the Libertarian Party nominee and died in a Spanish prison on June 23, 2021, hours after a court approved his extradition to the United States.
Who owns McAfee antivirus today?
McAfee Corp. is owned by an investor group led by the private equity firm Advent International, which took the company private in 2022 in a deal valued at roughly $4 billion. The company is headquartered in San Jose, California, and sells the McAfee+ suite of antivirus and identity protection products.
How did John McAfee die?
John McAfee was found dead in his cell at the Brians 2 penitentiary near Barcelona on June 23, 2021, hours after Spain’s National Court approved his extradition to the United States on tax evasion charges. The official ruling by the Catalan Justice Department was death by hanging. His wife Janice McAfee has publicly disputed the suicide finding.
What does McAfee antivirus do?
McAfee antivirus scans files, programs, and network traffic on a device against a database of known malware signatures, uses heuristic analysis to flag suspicious behavior, and quarantines or removes threats in real time. The current McAfee+ subscription also bundles a VPN, identity monitoring, credit protection, and the AI-powered Deepfake Detector that flags synthetic audio and video.
Was John McAfee a billionaire?
No, John McAfee was never a billionaire. At the peak of his McAfee Associates stake in the early 1990s, his holdings were briefly worth roughly $100 million, and he self-reported a personal fortune of about $100 million in 2007. After the 2008 financial crisis wiped out his real estate investments, he publicly said his net worth had fallen to roughly $4 million.
Did John McAfee have children?
John McAfee had one confirmed daughter, Jessica McAfee, from his first marriage, and he publicly claimed to have fathered 47 children across multiple relationships. The 47-children claim was never independently confirmed by any official record and was widely reported as self-reported.
The Man Behind the Software Brand: McAfee’s Lasting Impact
So who is McAfee, in the end? He was a programmer who saw the first PC virus and built a tool to fight it, then turned that tool into a company that became the template for an entire industry. He was also a man who lost control of his own name long before he died, and who spent the last 27 years of his life attacking the product that still carried his surname. Two very different McAfees share one very recognizable brand, and now you know how to tell them apart.
If you are researching cybersecurity history, start with the 1987 founding of McAfee Associates and the launch of VirusScan. If you are shopping for antivirus today, the McAfee+ subscription is the modern product and has no surviving ties to John McAfee the founder. And if you are trying to understand the wild final chapter, the Running with the Devil documentary is the most complete visual record. Whatever angle brought you here, the man and the company both belong on your radar, and the bridge between them is the part no other article covers in one place.
