“Paying taxes is now a threat?” The question, posed in frustration by Curve founder Michael Egorov, captures the anxiety spreading among French crypto holders after a massive data leak at the country’s tax authority exposed the personal details of 678,000 taxpayers.
For many of those on the leaked list, the risk is not just identity fraud or phishing emails. Analysts warn that the breach could fuel a dangerous rise in so‑called “wrench attacks” – violent, real‑world assaults where criminals use force, intimidation, or kidnapping to extort cryptocurrency from victims.
678K taxpayers exposed – and thousands are high earners
Security expert Jameson Lopp, CSO at Casa Wallet, analyzed the leaked dataset and highlighted how lucrative the target pool now is. Among the exposed taxpayers:
– More than 28,000 reportedly have annual incomes above 100,000 euros
– Roughly 400 individuals earn over 1 million euros per year
If even a fraction of those high earners are involved in crypto investing, the leak effectively hands organized crime a curated list of affluent targets with a higher‑than‑average probability of holding digital assets.
For a country already dealing with an outsized share of crypto‑motivated physical attacks, the breach could mark a dangerous turning point.
France’s troubling status as a wrench‑attack hotspot
While online exchange hacks and protocol exploits tend to dominate crypto headlines, an underreported but growing threat has been unfolding offline: direct, often brutal attacks against individuals believed to hold significant crypto.
These “$5 wrench attacks” – a term popularized to describe using physical coercion rather than sophisticated hacking – have taken on a particularly violent form in France. Typical scenarios include:
– Armed home invasions targeting wealthy investors, founders, or influencers
– Kidnappings of victims or their relatives, followed by ransom demands in crypto
– Assaults where attackers force victims to unlock wallets or sign transactions on the spot
Victims have reported severe beatings, torture, and in some cases permanent injuries. A few incidents have ended in death, while only a limited number of victims have been rescued quickly enough by police to avoid serious harm.
High‑profile French crypto figures targeted
Recent years have seen several headline‑grabbing cases involving prominent members of the French crypto ecosystem, underscoring how visible wealth and public association with digital assets can attract predators.
– In February 2026, David Prinçay, the CEO of Binance France, was reportedly the victim of a home invasion. Details remain limited, but the incident highlighted that even top executives of major exchanges are not immune to physical threats.
– In another chilling episode, Ledger co‑founder David Balland and his wife were kidnapped. The attackers allegedly demanded a ransom of 10 million euros, to be paid in crypto. Fortunately, law enforcement intervened and the couple was freed, but the case illustrated both the scale of demands and the willingness of criminals to escalate.
Such incidents have contributed to a climate of fear among entrepreneurs, traders, and long‑time crypto adopters in France, many of whom worry that public success or even modest online visibility could make them targets.
Violent crypto crime by the numbers
Data from a Crypto Crime tracking initiative indicates that violent, crypto‑related attacks are not isolated one‑off events. So far this year:
– 61 violent incidents linked to cryptocurrency have been recorded globally
– Cumulative losses from these cases stand at around 143 million dollars
France sits at the top of this grim leaderboard, with home invasions and kidnappings noted as the most prevalent methods employed by attackers.
A separate analysis by Chainalysis estimates direct monetary losses from such attacks at a lower figure – around 30 million dollars – but still identifies France as the epicenter, with 36 incidents, followed by the United States and Brazil.
Regardless of the exact totals, all major datasets converge on one conclusion: France experiences disproportionate levels of physically violent crypto extortion compared to most other jurisdictions.
Allegations against the French tax authority
The new tax data breach is not occurring in a vacuum. Earlier this year, Telegram founder Pavel Durov publicly alleged that employees within the French tax administration were directly selling citizens’ personal data to organized crime groups. According to his claims, this illicit trade was a driving factor behind the surge in crypto‑related kidnappings and home invasions in the country.
The latest breach appears to reinforce the perception that sensitive financial and identity information held by government agencies is not adequately protected – or, worse, may be circulating in criminal networks.
This is why Egorov’s bitter remark – “Paying taxes is now a threat?” – resonates so strongly. In theory, filing taxes is a civic duty; in practice, for some French crypto investors, it now feels like an additional exposure point that could endanger their families.
Success rate of violent attacks was falling – until now
One sliver of good news had been the declining “success rate” of violent crypto crimes. In 2026, only about 26% of reported incidents were considered successful from the attackers’ perspective, suggesting that improved awareness, stronger operational security, and faster law enforcement response were starting to make a difference.
The leak of a detailed, high‑value list of taxpayers threatens to weaken those gains. Criminals no longer need to guess who might be wealthy; they can cross‑reference leaked tax data with social media, corporate records, and blockchain heuristics to shortlist those with both money and crypto exposure.
Security analysts warn that this combination – precise targeting plus the irreversible nature of crypto transactions – could encourage more sophisticated and persistent attack campaigns.
Combined effect with other security incidents
Compounding the problem, experts point out that the French tax breach is occurring shortly after other notable security incidents in the crypto industry, including a recent compromise affecting Trezor users.
Individually, each breach is dangerous; collectively, they can be catastrophic. A criminal group that manages to correlate:
– Government‑sourced income and identity data
– Email databases from wallet hardware leaks
– Social media profiles hinting at crypto activity
can construct highly accurate profiles of individuals likely to hold substantial digital wealth, along with their home addresses, families, and daily routines.
This layered intelligence drastically reduces their operational risk and increases the odds that an attack will yield significant loot.
What French crypto investors can do now
For people in France whose data may have been included in the tax breach – especially those with meaningful crypto exposure – security can no longer be treated as an abstract, digital‑only concept. It becomes a question of personal safety.
Practical steps to consider include:
– Reduce public visibility of wealth
Avoid flaunting profits, trading screenshots, or asset figures in public channels or personal networks. The less explicit your online footprint, the harder it is to cross‑reference you with leaked data.
– Segregate identities
Use different email addresses, usernames, and contact details for trading, public commentary, and private life. Ensure that your tax identity is not trivially linked to your crypto persona.
– Strengthen home security
Install alarms, cameras, and secure entry points. Consider safe rooms or at least reinforced doors. Even modest improvements can buy time and deter opportunistic criminals.
– Plan for a coercion scenario
Think through in advance what you would do if you or a family member were threatened. Some security models incorporate decoy wallets with small balances, time‑locked contracts, or multi‑signature setups where you cannot unilaterally move large funds under duress.
– Minimize what you personally control
For substantial holdings, consider structures where a single person cannot immediately move all funds (for instance, distributed multi‑sig between trusted entities). While not foolproof, this can reduce the effectiveness of wrench attacks.
– Educate close relatives
Family members often become targets because they are easier to intimidate. They should understand the risks, recognize social engineering attempts, and know basic emergency protocols.
The policy dimension: state responsibility and trust erosion
Beyond individual defenses, the French case highlights a systemic problem: when governments collect granular financial data, they assume a duty to protect it. Repeated leaks, allegations of insider selling, and the visible rise in related violent crime pose serious questions:
– How rigorously are insiders screened and monitored?
– What penalties exist for misuse or sale of government‑held data?
– Are cybersecurity budgets and practices aligned with the sensitivity of the information stored?
If taxpayers come to believe that disclosing their income and assets puts them on a hit list for criminals, trust in both the tax system and the state itself erodes. That distrust can push more wealth into opaque channels, encourage underreporting, and further entangle crypto in narratives of crime and evasion.
For a country actively trying to position itself as a hub for digital innovation and fintech, allowing that perception to harden would be strategically damaging.
The changing nature of crypto risk
For a long time, the standard warning to crypto investors was almost entirely digital: beware of phishing, exchange hacks, malware, and smart‑contract exploits. The French experience shows that as crypto matures and more wealth is stored on‑chain, the attack surface inevitably expands into the physical world.
Where once the main fear was a compromised seed phrase, now a more realistic scenario for some high‑net‑worth individuals is a gang at the front door with weapons and detailed knowledge of their finances.
This shift demands a broader security mindset. Digital hygiene remains crucial, but it is no longer sufficient. The line between “cybersecurity” and “personal safety” is blurring, and any serious crypto risk assessment must account for both.
Looking ahead: will the breach reshape behavior?
The French tax leak is likely to have several medium‑term consequences:
– Wealthy crypto holders may increasingly relocate or adopt more complex legal and physical security arrangements.
– Projects and founders may think twice about public visibility, downplaying personal involvement or residence details.
– More investors could explore custodial or institutional solutions that reduce the perception of direct, personal control over large wallets.
– Pressure may mount on authorities to overhaul both internal controls and external communication around data protection.
Whether these developments will be enough to offset the new risks remains unclear. What is obvious is that the era when crypto crime was seen primarily as a battle between hackers and exchanges is over. The threats now reach into homes, families, and everyday life.
For French crypto investors whose financial details may now be circulating in criminal circles, “paying taxes” has indeed become more than a bureaucratic obligation. It is, at least for the moment, another vector of exposure in an already dangerous landscape – one that demands urgent reassessment of how they protect both their coins and themselves.