The worst fears of privacy advocates are being realized in France, where the hunt for tax revenue has collided with a violent epidemic of “wrench attacks.” As European tax authorities tighten their grip on digital asset reporting, a disturbing case involving a rogue tax agent has revealed that the government’s own databases may be the most dangerous leak of all.
The Insider Threat
The controversy at issue involves Ghalia C., 32, a former French tax agent, currently in custody. She was sentenced on June 30, 2025, for aiding a criminal conspiracy involved in a violent attack on a prison guard and now is under investigation for her online activity.
Her conviction was for helping mafia-type organizations using violence against police, but according to reports from various media outlets in France, an internal investigation into Ghalia C.’s activities has resulted in the discovery of many more targets (and the associated pattern of surveillance) than had been previously thought.
According to the French media, Ghalia was using her privilege as a tax authority and accessing confidential databases to create profiles on various individuals as a potential target. Her searches were reportedly not limited to public figures; she also created profiles on private cryptocurrency investors and compiled the following information about each against their consent: home addresses, income declarations, and capital gains records.
“This is the nightmare scenario,” said Pierre Larson, a cybersecurity analyst based in Lyon. “We have always worried about hackers breaching exchanges. We did not anticipate the danger coming from the very people paid to process our tax returns.”
Although authorities have not officially linked Ghalia C. to specific physical attacks on crypto holders, her case has shattered the assumption that sensitive financial data is safe in government hands. The ability of a mid-level bureaucrat to generate a “hit list” of high-net-worth individuals has cast a pall over the country’s crypto community.
A Violent Epidemic
The revelation of these crimes comes during an extremely anxious time. Globally, France has developed into a primary hub for incidents of physical violence related to cryptocurrency, now commonly referred to as Wrench Attacks. Initially employed for simple robbery, these attacks have progressed into more sophisticated, methodical and accurate home invasions and abductions.
One example of the violent nature of these attacks is an incident involving David Balland, one of the co-founders of Ledger (a company that manufactures& sells hardware wallets, among other products), from Central France in January 2025. David and his wife were abducted from their house in France by individuals who subsequently demanded ransom and mutilated him severely before being stopped by authorities.
Since then, the trend has accelerated. “Criminals know that digital security is getting harder to break,” Larson noted. “It is far easier to break into a home and force a transfer at gunpoint. And to do that, you don’t need code; you just need an address.”
Data Leaks Fuel the Fire
The danger is being compounded by third-party failures. Just this week, on January 5, 2026, Ledger customers were alerted to a massive data breach involving Global-e, a third-party payment processor. While no private keys were compromised, the breach exposed the names and physical addresses of customers who purchased hardware wallets—effectively providing criminals with a map of where crypto owners live.
The Taxman’s Net Tightens
On the other hand, the French government has been aggressively expanding their surveillance of digital assets based on the recent upsurge in violence. They have put forth new legislation as part of the proposed 2026 Budget that will classify cryptocurrency as “non-productive” wealth. This classification would impose a flat 1% annual tax on crypto holdings exceeding €2 million, regardless of whether the assets are sold.
To enforce this, tax authorities are demanding unprecedented transparency. Under DeFi reporting requirements, Exchanges and Wallet Providers must create a “historical record” for on-chain transaction history using verified identity records (KYC) for every user. For the first time, holding assets in self-custodial or offshore wallets will not exempt investors from scrutiny; failing to declare these assets carries severe penalties, forcing compliance on citizens who fear their data could be weaponized against them.
The Privacy Paradox
The convergence of aggressive taxation and physical insecurity has created a dangerous paradox. To comply with the law, French citizens must centralize their data with the government. As illustrated by Ghalia’s C.’s case above, centralization produces one point of failure, which is something organized crime takes advantage of.
As the appeal of Ghalia C. proceeds through the courts, the chilling effect is already visible. Demand for privacy-preserving tools and “mixers” has surged, and many high-net-worth holders are reportedly exploring relocation to jurisdictions where physical safety—and data privacy—are better guaranteed. For now, in France, transparency has become a liability.
