--- title: "Why Crypto's 'Wrench Attacks' Are Surging in France" description: "France has become the epicenter of 'wrench attacks' — in-person robberies and kidnappings that force crypto holders to hand over their coins — with dozens of cases reported this year. The government is promising a tougher response. It's a stark reminder that crypto held in self-custody is only as secure as the person holding it." category: "Crypto" category_url: https://boursel.com/category/crypto author: "Sofia Marchetti" published: 2026-07-02T05:45:00.000Z updated: 2026-07-02T05:45:00.000Z canonical: https://boursel.com/article/why-crypto-s-wrench-attacks-are-surging-in-france tags: ["crypto", "security", "france", "self-custody", "ledger"] --- # Why Crypto's 'Wrench Attacks' Are Surging in France France has become the epicenter of 'wrench attacks' — in-person robberies and kidnappings that force crypto holders to hand over their coins — with dozens of cases reported this year. The government is promising a tougher response. It's a stark reminder that crypto held in self-custody is only as secure as the person holding it. Cryptocurrency was supposed to be hard to steal. Increasingly, thieves are skipping the code entirely and going after the person. France has recorded around **77 crypto-related kidnapping and extortion cases in the first half of 2026**, up sharply from the year before, [Cointelegraph reported](https://cointelegraph.com/news/french-wrench-attacks-rise-to-77-as-government-promises-more-support), making it the world's hotspot for what the industry calls **"wrench attacks."** The government has promised a tougher response. ## What a "wrench attack" is The name comes from a long-running joke in security circles: no matter how strong your encryption, an attacker with a $5 wrench can simply threaten you until you hand over the password. A **wrench attack** is exactly that — **physical coercion**, robbery or kidnapping used to force a victim to transfer their crypto, [as CoinDesk has documented](https://www.coindesk.com/business/2026/04/19/inside-the-rise-of-wrench-attacks-against-crypto-holders-and-how-france-has-become-the-focus). ## Why crypto is uniquely exposed The vulnerability comes down to how crypto works. Money in a bank can be **frozen or clawed back**; a fraudulent transfer can sometimes be reversed. A cryptocurrency transaction is **final and irreversible** — once coins move, they're gone. And crypto held in **self-custody** — where the owner controls the **private keys** on a hardware wallet or app, rather than leaving funds on an exchange — has no institution in the middle to block a suspicious transfer or impose a delay. (A **private key** is the secret code that authorizes spending from a crypto wallet; whoever has it controls the money.) That combination — instant, irreversible transfers with no gatekeeper — is precisely what makes crypto resistant to censorship. It is also what makes physical coercion so effective: force the key from the victim, move the coins in minutes, and there is no recall button. ## Why France France's prominence traces partly to a **2020 data breach** at **Ledger**, the French maker of hardware wallets, which exposed the names, addresses and contact details of hundreds of thousands of customers — a ready-made target list, [security analysts say](https://www.coindesk.com/business/2026/04/19/inside-the-rise-of-wrench-attacks-against-crypto-holders-and-how-france-has-become-the-focus). Combined with public visibility of crypto wealth, that has made identifiable French holders targets. The threat hit home in **January 2025**, when Ledger co-founder **David Balland** was kidnapped and mutilated before police freed him — a case that shook the industry. ## France's response The French government has pledged a coordinated crackdown, [Cointelegraph reported](https://cointelegraph.com/news/french-wrench-attacks-rise-to-77-as-government-promises-more-support): closer work with the crypto industry and its trade body, better intelligence-sharing on the often foreign-based criminal networks behind the attacks, and tighter coordination among police forces. France has also moved to let crypto holders **shield their home addresses** in public business registries — a recognition that data exposure is a root cause. Officials say faster alert systems have already aided arrests, though authorities acknowledge determined attackers remain hard to stop. ## Why it matters For **crypto holders**, the surge is a blunt lesson that digital-asset security is not only about strong passwords and cold storage — it's also **physical.** For the **industry**, a wave of violent attacks is a reputational and practical problem: it underscores that the same self-custody independence crypto celebrates removes the safety nets ordinary savers rely on. And for **regulators and police**, it's a new category of crime that blends cyber and street violence, and that data leaks can directly fuel. Boursel gives no security advice; the takeaway is that as crypto wealth becomes more visible and more valuable, its owners are learning that the weakest link isn't the blockchain — it's the human being who holds the keys. ## Sources - [French 'wrench attacks' rise to 77 as government promises more support](https://cointelegraph.com/news/french-wrench-attacks-rise-to-77-as-government-promises-more-support) - [Inside the rise of wrench attacks against crypto holders](https://www.coindesk.com/business/2026/04/19/inside-the-rise-of-wrench-attacks-against-crypto-holders-and-how-france-has-become-the-focus)