For more than fifteen years, Vyacheslav Penchukov – known in the digital underworld as Tank– was one of the most enigmatic and sought-after figures in international cybercrime. Charismatic, unpredictable, and astonishingly sociable, Penchukov did not stand out for exceptional technical skill, but rather for an innate ability to gain trust and build networks of collaborators. From Englewood prison in Colorado, where he is serving two nine-year sentences, he has given his first extensive interview, revealing unprecedented details about the operations, alliances, and mindset of the cyber gangs that have sown global chaos for two decades.
The story of Penchukov begins far from the Rocky Mountains that surround Englewood. In Donetsk (Ukraine), teenage hacking began by looking for tricks for video games such as FIFA 99 or Counter-Strike. Over time, this informal learning led him to head Jabber Zeus, a group that, in the late 2000s, used the sophisticated malware Zeusto infiltrate bank accounts of companies, municipalities, and NGOs. In just three months, more than 600 British victims lost over £4 million.
Tank was then a twenty-five-year-old man living among luxury German cars, late-night DJ sessions, and a secret office where he and his team stole money during six or seven-hour shifts. As explained, at that time cybercrime was easy money: unprotected banks, overwhelmed police, and a digital world that was poorly prepared.
But the party ended when the FBI intercepted their conversations on Jabber and discovered their identity from a banal detail: the birth of their daughter. An international operation, Trident Breach, resulted in multiple arrests, but Tank escaped thanks to a tip-off and the speed of his Audi S8 with a Lamborghini engine. After hiding for a while, he tried to reform himself by managing a coal business. However, the constant bribery of Ukrainian officials and the impact of the war in the Donbass pushed him back into criminal activity.
Starting in 2018, Penchukov returned with more strength, now immersed in the ransomware ecosystem, a business much more lucrative than traditional bank robbery. He was part of well-known groups such as Maze, Egregor, Conti, or IcedID, specialising in infecting corporate systems, extorting companies, and even hospitals. In his opinion, the profits could reach $200,000 per month, although there were rumours of million-dollar ransoms circulating within the criminal forums.
The hacker community, as explained, operates on a herd mentality: when a group achieves an exceptional haul, hundreds of imitators launch similar attacks without considering the human consequences. And for many of these offenders, victims are just numbers, and the damages are matters covered by insurance.
One of the most controversial aspects of his testimony is the natural confirmation that several ransomware groups maintained regular contacts with Russian security services, including the FSB. This hypothesis had already been pointed out by multiple Western agencies, but Tank describes these connections as common practice.
He also speaks of his former relationship with Maksim Yakubets, alleged leader ofEvil Corpoand subject of a $5 million bounty. They were friends, going out together in Moscow, and Yakubets, apparently obsessed with showing off his wealth, was surrounded by bodyguards. But when Yakubets was arrested in 2019, the cybercrime community turned its back on him. Penchukov claims that he himself avoided it out of fear of being related to it.
The capture of Penchukov in 2022 was worthy of a film: an operation in Switzerland with snipers on the rooftops, hooded agents, and his children as unwitting witnesses. He still considers that the operation was excessive, but the thousands of victims who have lost savings, jobs, or stability would likely disagree.
In Englewood, Tank spends his days studying languages, playing sports, and obtaining secondary school qualifications. In the final stretch of his confession, Penchukov admits that his downfall came from the very collaborators with whom he had shared fortune and risk. In cybercrime, he says, you can’t have friends. Everyone distrusted everyone; many, when they were arrested, became informants. Paranoia is the only constant in the criminal world.
Now, as he awaits a possible sentence reduction and faces a restitution order of $54 million, Tank looks back with a mix of pride, nostalgia, and justification. He speaks of the past with an almost romantic tone, like a distant adventure. But the traces of his legacy—ruined businesses, paralysed hospitals, affected families—still live on.
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