The Alarming Rise of Crypto-Related Kidnappings in France and the Growing Threat of Wrench Attacks

A surge in crypto-related kidnappings has put France at the center of a global trend, with wrench attacks becoming increasingly frequent, brazen, and violent. This shift was evident during a recent international blockchain and crypto conference in Paris, where security was heavily reinforced. Government officials expressed alarm at the scale of the problem, citing at least 41 crypto-related kidnappings and home invasions in France this year, equivalent to one every two to three days. Minister Delegate to the Interior Ministry, Jean-Didier Berger, announced that new measures are being prepared to tackle the growing issue, including a prevention platform that has already drawn thousands of registrations. However, authorities acknowledge that further steps are needed as incidents continue to rise. The term 'wrench attack' refers to the use of physical force to extract access to digital assets, and researchers note that attackers are now focusing on identifying victims rather than exploiting technical vulnerabilities. They build profiles by tracking social media activity, public appearances, and leaked datasets, and look for points of weakness. The problem is exacerbated when attackers receive insider information from government officials, as seen in a recent case where a French tax official sold sensitive data to wrench attackers. The pool of potential victims has widened, with mid-level holders increasingly being targeted, and cases now include families with children being targeted alongside crypto-holding parents. The attacks have become harder to categorize by severity, with cases involving prolonged captivity, torture, and even severed body parts. Security experts point to the increasing coordination among attackers, with some groups operating with defined roles and pre-planning, including surveillance and follow-home tactics. After obtaining funds, attackers tend to move quickly, converting crypto assets into stablecoins and routing them across multiple chains, making recovery more difficult. France's role in this trend may reflect a mix of factors, including cases involving leaked personal data and cross-border criminal networks. Rising asset prices have increased the potential payoff from a single attack, while improvements in digital security have reduced the effectiveness of purely technical exploits. The increase in attacks has raised questions about the risks of self-custody, a core principle of cryptocurrency, and security experts recommend measures such as multi-signature setups, withdrawal delays, and spending limits to reduce risk. As crypto adoption grows, attacks are becoming more frequent and severe, turning what was once a niche concern into a broader security risk.