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About 70% of all wrench attacks, physical attacks against crypto holders and their families, carried out in an attempt to steal digital assets, occur in France, according to Bitcoin journalist Joe Nakamoto. There have been 41 crypto-related kidnappings in France so far in 2026, Nakamoto said, or about one attack every two and a half days, he added. He attributed the rise in wrench attacks to know-your-customer data collection, which is stored in centralized servers that were compromised in several high-profile data leaks, including the 2020 leak of hardware wallet provider Ledger’s customer data.An overview of wrench attacks in France so far in 2026. Source: Joe NakamotoThat data leak disclosed the identities, home addresses and emails of more than 270,000 customers worldwide, he added. Jameson Lopp, the CEO of crypto wallet and key management company Casa, said:“France is the canary in the coal mine, demonstrating how financial regulations create a surveillance apparatus that causes direct harm to bitcoin holders.” Opposition to know-your-customer data collection is mounting inside the crypto and Bitcoin communities, as digital asset holders continue to be targeted with physical attacks and kidnappings, prompting a need for increased security measures.Related: Europe sees ‘hyperconcentration’ of crypto wrench attacks as losses hit $101MDon’t become a target: Bitcoiners offer advice to safeguard against attacksThe attacks are typically orchestrated by criminals living abroad, who contract young people living in France to carry out the physical attacks, Nakamoto said.Users can stay safe by using crypto custody services that offer security features like a pre-agreed-upon word or phrase that lets a custodial or key management company know the holder is being actively attacked.A database of known wrench attacks. Source: GitHubThe company can then freeze the assets, making sure they are not accessed by the attackers, and can even alert law enforcement authorities, he said.He also suggested keeping a “decoy” crypto wallet with a small amount of funds to hand over to criminals in the event of an attack. Finally, crypto holders should keep a low profile and not discuss crypto topics online or make it public knowledge that they hold digital assets, he added.At least 88 individuals have been arrested in connection with crypto wrench attacks in France, according to Vanessa Perrée, the country’s national prosecutor for organized crime.Magazine: Agent wastes 14 hours of scammers’ time, LLMs ‘poisoned’ by Iran: AI Eye