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Hackers have breached a major Russian prison database, exposing sensitive information and showing support for Russian opposition leader Alexey Navalny, who died while in Russian custody last month.

Hackers infiltrated a computer network linked to Russia’s prison system, placing Navalny’s photo on a compromised website operated by a prison contractor. The hacked website displayed the message, “Long live Alexey Navalny,” along with a photograph of Navalny and his wife Yulia. Beyond this symbolic move, the cybercriminals accessed a database containing details on hundreds of thousands of prisoners, including those at the Arctic penal colony where Navalny spent his final days.

The hackers also exploited the compromised system to adjust prices on the prison’s online store, causing items to sell at heavily discounted rates (some items had discounts up to 95% off).

Navalny, who was serving a 19-year sentence for extremism—a charge he and his supporters denounced as politically motivated—recently died in custody, fueling discussions about the breach’s timing and intent.

Russia has denied any involvement in Navalny’s death and argued that his death was “sudden” and “unexpected.” Last month, Russian President Vladimir Putin also acknowledged the death of Navalny, noting “It happens. There is nothing you can do about it. It’s life.”