Crypto wealth is no longer only a digital security problem. A recent wave of kidnappings, home invasions and coercive thefts shows how visible holdings can turn into physical risk.
The latest crypto crime story is not about a bad smart contract or a phishing link. It is about people being followed, abducted or threatened until they hand over passwords, seed phrases or direct transfers. That is a harder problem for the industry to dismiss, because the weakest point is no longer the wallet. It is the person holding it.
Reports from France, security firms and international outlets point to a sharp rise in so-called "wrench attacks," the term used for physical coercion aimed at forcing access to digital assets. As Reuters reported in late April, French prosecutors charged 88 people, including more than 10 minors, in a series of cryptocurrency-related kidnapping and extortion cases. The numbers matter because they show this is not a fringe fear shared only in online forums. It is now a law enforcement issue.
The playbook is simple and ugly. Criminals identify a target, gather personal information, create leverage and force a transfer. Sometimes that means going after the holder directly. Sometimes it means targeting a spouse, parent or child, because relatives can be easier to find and harder for a victim to ignore.
That makes crypto different from many other high-value assets. A bank transfer can often be paused, challenged or traced through institutions. A coerced crypto transfer may settle quickly and cannot be reversed in the ordinary way. For criminals, that creates a dangerous incentive. For holders, it means personal privacy and physical security are now part of asset protection.
France has become the warning sign
France has emerged as the clearest example of how fast the threat can escalate. Local and international reporting has described dozens of crypto-linked kidnappings, attempted abductions and ransom schemes since the start of 2026, with prosecutors moving against organised groups in late April. The cases include attacks on people connected to crypto companies as well as family members used as pressure points.
One widely reported case involved Ledger co-founder David Balland and his wife, who were abducted in January 2025 in an attempted crypto ransom plot. More recent French cases have involved younger suspects, encrypted messaging groups and alleged organisers directing attacks from a distance. That pattern matters because it suggests a criminal market is forming around target lists, personal data and operational instructions.
Security firm CertiK has also warned that physical attacks on crypto holders are becoming a more established threat vector. Its recent research found a 75 percent increase in confirmed wrench attacks in 2025, with roughly $41 million in confirmed losses, and it documented another rise in verified cases during the first four months of 2026. Those figures are likely incomplete, because many victims have strong reasons to stay quiet.
Data leaks are turning visibility into risk
The common thread is information. Attackers do not need to break a blockchain if they can connect a wallet, an exchange account, a tax record or a public brag to a real address. Social media posts, conference appearances, luxury purchases and leaked customer data can all help build a target profile.
This is where the crypto industry has a serious reputational problem. For years, self-custody was framed mostly as freedom from banks and platforms. That still has appeal, but it also shifts the burden of security onto individuals who may not be prepared for real-world threats. A hardware wallet does not protect someone from a group at the door demanding a passphrase.
There is also a tension between public crypto culture and personal safety. Investors often build reputations by talking about trades, collections, token wins or market calls. Founders and influencers do the same because attention brings deals, followers and customers. But the more visible the wealth signal becomes, the easier it is for criminals to sort targets by perceived value.
The industry response has to move offline
Exchanges, wallet providers and crypto events are beginning to respond with stronger physical security, staff briefings and clearer guidance for high-risk users. That is useful, but it is only a starting point. The larger lesson is that security advice cannot stop at two-factor authentication and cold storage.
For serious holders, the practical steps are more direct. Stop posting financial wins. Keep wallet identities separate from public identities. Use custody arrangements that remove a single point of failure. Consider multisignature setups, institutional custody or withdrawal delays for large sums. Treat seed phrases as physical secrets, not just digital backups.
Law enforcement also has work to do. If leaked official records, exchange data or tax information help criminals identify targets, those failures cannot be treated as ordinary privacy incidents. They become part of a chain that can end in violence. France's organised-crime investigations show how quickly cyber risk and street crime can merge.
The broader market implication is clear. Mainstream adoption depends on ordinary investors believing crypto can be held without inviting personal danger. If the industry wants self-custody to remain a credible option, privacy, data control and offline safety have to be treated as core infrastructure. The next test for crypto security will not only be whether wallets can resist hackers. It will be whether the people behind those wallets can stay out of the target file.
