Gal Vallerius – "OxyMonster" and the Fall of an AlphaBay Administrator
Jul 13, 2026
When people think about AlphaBay, the first names that usually come to mind are Alexandre Cazes and DeSnake.
But behind the scenes there was another administrator who played an important role in helping the marketplace grow into the largest darknet market of its time.
His online name was OxyMonster.
His real name was Gal Vallerius.
Unlike many darknet figures whose identities remain unknown, Vallerius lived a surprisingly public life.
He was a French citizen, a husband, a father, and an award-winning beard enthusiast who regularly attended international beard competitions. Friends described him as friendly and outgoing. Online, he posted photos of himself proudly displaying one of the world's most recognizable beards.
Few people imagined that U.S. investigators believed he was also one of AlphaBay's senior administrators.
Becoming OxyMonster
Long before his arrest, Vallerius had established himself on darknet forums under the nickname "OxyMonster."
According to court documents, he gradually became one of AlphaBay's trusted administrators. His responsibilities allegedly included resolving disputes between buyers and vendors, approving new vendors, moderating discussions, and helping oversee day-to-day operations of the marketplace.
By 2017, AlphaBay had become enormous.
Investigators estimated the marketplace hosted hundreds of thousands of listings and served users from almost every continent.
To many vendors, OxyMonster was simply one of the familiar names behind the scenes who helped keep the marketplace running.
The Beard Competition
In August 2017, Vallerius boarded a flight from France to the United States.
His destination wasn't a secret meeting.
It wasn't a hidden server facility.
He was traveling to compete in the World Beard and Moustache Championships in Austin, Texas.
What he didn't know was that U.S. authorities had already linked the online identity "OxyMonster" to him.
When his plane landed, federal agents were waiting.
He was arrested before ever reaching the competition.
It remains one of the most unusual arrests connected to a darknet marketplace.
Following the Digital Trail
According to prosecutors, investigators didn't rely on a single piece of evidence.
Instead, they combined information from AlphaBay, online communications and digital devices seized during the investigation.
One of the most significant discoveries came after agents searched Vallerius.
Authorities said they found a laptop containing cryptocurrency wallets and login credentials linked to AlphaBay administrator accounts.
Investigators also recovered substantial amounts of cryptocurrency that prosecutors alleged were connected to his role within the marketplace.
Vallerius denied being one of AlphaBay's founders, but eventually admitted that he had served as an administrator using the alias OxyMonster.
A Different Ending
Unlike some other major darknet figures, Vallerius chose to cooperate.
He pleaded guilty in federal court to conspiracy to distribute controlled substances and conspiracy to commit money laundering.
His cooperation became an important part of the broader AlphaBay investigation.
In 2020, a U.S. judge sentenced him to 20 years in federal prison.
The sentence reflected the scale of AlphaBay's operations and his admitted role in helping administer one of the largest darknet marketplaces ever created.
More Than Just a Moderator
Many people mistakenly assume OxyMonster was simply answering support tickets.
Court records suggest his role was much larger.
Senior administrators helped shape marketplace policies, resolve major disputes, approve trusted vendors and maintain confidence in the platform.
On a marketplace processing millions of dollars in transactions, trust was everything.
Without administrators willing to keep the marketplace functioning, buyers and vendors would quickly disappear.
The Legacy
The story of Gal Vallerius is one of the strangest chapters in darknet history.
A man known internationally for his extraordinary beard became internationally known for something entirely different.
His arrest demonstrated that investigators weren't only interested in marketplace founders.
Moderators, administrators and trusted insiders were also becoming targets.
For many longtime darknet users, the arrest of OxyMonster marked another turning point.
It showed that even people working quietly behind the scenes could eventually be identified through years of patient investigation.
Today, Gal Vallerius remains one of the best-known administrators ever connected to AlphaBay.
Not because he built the marketplace.
But because his story proved that even in a world built on anonymity, identities can remain hidden only for so long.
Timeline
2014–2017 – Serves as an AlphaBay administrator under the alias "OxyMonster."
July 2017 – AlphaBay is seized during Operation Bayonet.
August 2017 – Arrested upon arrival in Austin, Texas, while traveling to the World Beard and Moustache Championships.
2018 – Pleads guilty in U.S. federal court.
2020 – Sentenced to 20 years in prison.
The arrest of OxyMonster became one of the most memorable episodes in the AlphaBay investigation—not only because of his role on the marketplace, but because of the remarkable contrast between his very public hobby and his alleged secret life online.
But behind the scenes there was another administrator who played an important role in helping the marketplace grow into the largest darknet market of its time.
His online name was OxyMonster.
His real name was Gal Vallerius.
Unlike many darknet figures whose identities remain unknown, Vallerius lived a surprisingly public life.
He was a French citizen, a husband, a father, and an award-winning beard enthusiast who regularly attended international beard competitions. Friends described him as friendly and outgoing. Online, he posted photos of himself proudly displaying one of the world's most recognizable beards.
Few people imagined that U.S. investigators believed he was also one of AlphaBay's senior administrators.
Becoming OxyMonster
Long before his arrest, Vallerius had established himself on darknet forums under the nickname "OxyMonster."
According to court documents, he gradually became one of AlphaBay's trusted administrators. His responsibilities allegedly included resolving disputes between buyers and vendors, approving new vendors, moderating discussions, and helping oversee day-to-day operations of the marketplace.
By 2017, AlphaBay had become enormous.
Investigators estimated the marketplace hosted hundreds of thousands of listings and served users from almost every continent.
To many vendors, OxyMonster was simply one of the familiar names behind the scenes who helped keep the marketplace running.
The Beard Competition
In August 2017, Vallerius boarded a flight from France to the United States.
His destination wasn't a secret meeting.
It wasn't a hidden server facility.
He was traveling to compete in the World Beard and Moustache Championships in Austin, Texas.
What he didn't know was that U.S. authorities had already linked the online identity "OxyMonster" to him.
When his plane landed, federal agents were waiting.
He was arrested before ever reaching the competition.
It remains one of the most unusual arrests connected to a darknet marketplace.
Following the Digital Trail
According to prosecutors, investigators didn't rely on a single piece of evidence.
Instead, they combined information from AlphaBay, online communications and digital devices seized during the investigation.
One of the most significant discoveries came after agents searched Vallerius.
Authorities said they found a laptop containing cryptocurrency wallets and login credentials linked to AlphaBay administrator accounts.
Investigators also recovered substantial amounts of cryptocurrency that prosecutors alleged were connected to his role within the marketplace.
Vallerius denied being one of AlphaBay's founders, but eventually admitted that he had served as an administrator using the alias OxyMonster.
A Different Ending
Unlike some other major darknet figures, Vallerius chose to cooperate.
He pleaded guilty in federal court to conspiracy to distribute controlled substances and conspiracy to commit money laundering.
His cooperation became an important part of the broader AlphaBay investigation.
In 2020, a U.S. judge sentenced him to 20 years in federal prison.
The sentence reflected the scale of AlphaBay's operations and his admitted role in helping administer one of the largest darknet marketplaces ever created.
More Than Just a Moderator
Many people mistakenly assume OxyMonster was simply answering support tickets.
Court records suggest his role was much larger.
Senior administrators helped shape marketplace policies, resolve major disputes, approve trusted vendors and maintain confidence in the platform.
On a marketplace processing millions of dollars in transactions, trust was everything.
Without administrators willing to keep the marketplace functioning, buyers and vendors would quickly disappear.
The Legacy
The story of Gal Vallerius is one of the strangest chapters in darknet history.
A man known internationally for his extraordinary beard became internationally known for something entirely different.
His arrest demonstrated that investigators weren't only interested in marketplace founders.
Moderators, administrators and trusted insiders were also becoming targets.
For many longtime darknet users, the arrest of OxyMonster marked another turning point.
It showed that even people working quietly behind the scenes could eventually be identified through years of patient investigation.
Today, Gal Vallerius remains one of the best-known administrators ever connected to AlphaBay.
Not because he built the marketplace.
But because his story proved that even in a world built on anonymity, identities can remain hidden only for so long.
Timeline
2014–2017 – Serves as an AlphaBay administrator under the alias "OxyMonster."
July 2017 – AlphaBay is seized during Operation Bayonet.
August 2017 – Arrested upon arrival in Austin, Texas, while traveling to the World Beard and Moustache Championships.
2018 – Pleads guilty in U.S. federal court.
2020 – Sentenced to 20 years in prison.
The arrest of OxyMonster became one of the most memorable episodes in the AlphaBay investigation—not only because of his role on the marketplace, but because of the remarkable contrast between his very public hobby and his alleged secret life online.