Key conclusions

• Cryptocurrency security extends beyond digital threats, and criminals are increasingly targeting individuals directly through physical coercion, rather than trying to exploit blockchain vulnerabilities or hacking wallets.

• The French case illustrates how attackers used a imitation police raid and violence to force the transfer of $1 million worth of Bitcoin, completely bypassing encryption, forcing the victim to authorize the transaction.

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• Wrench attacks are on the rise, with criminals using threats or force instead of technical exploits. This shows how a human vulnerability can defeat even the most secure cryptographic systems.

• Impersonating authority figures such as the police is highly effective because it combines fear, urgency, and social conditioning, making it more likely that victims will comply without questioning the situation.

Digital defense is no longer the only frontline in cryptographic security. While phishing and exchange attacks have long been major threats, an increasing number of thefts now bypass the code entirely and target cryptocurrency holders directly.

A recent case in France highlights this change. Attackers posing as police staged a “raid” and physically forced the couple to hand over almost $1 million in Bitcoin (BTC). This was not a software failure, but a high-stakes robbery carried out using physical force.

When the target becomes the victim, not the wallet

The incident occurred in Le Chesnay-Rocquencourt, a town near Paris, where a couple in their 50s were allegedly attacked in their home.

Here is the chronology of the event:

• Three people dressed as policemen entered the house.

• The wife was threatened with a knife.

• The husband was forced to send bitcoins to the attackers.

• Both victims were injured and the husband was physically restrained and bound.

• The attackers fled the scene by car.

French authorities are currently investigating the case, and he faces charges including armed robbery and organized criminal conspiracy.

What makes this case stand out is not just the apply of violence, but the specific strategy used.

Instead of trying to break the encryption, the perpetrators bypassed it entirely by forcing the owner to authorize the transfer.

Why impersonating police officers is so effective

Impersonating law enforcement officers is often effective because it uses several psychological factors:

• Power: People are socially conditioned to obey police directives.

• Urgency: The appearance of an official raid creates the impression that immediate compliance is necessary.

• Fear: Any resistance may seem to lead to criminal consequences.

When criminals present themselves as police officers, victims often do not ask themselves:

• The reason for their presence.

• The validity of their demands.

• The authenticity of the whole situation.

Under stress, the impulse to obey tends to overpower the instinct to check or question what is happening.

In cryptocurrencies, this risk is even greater because a single approved transaction can move significant funds in a matter of seconds.

Did you know? The term “key attack” became popular in the crypto space after a webcomic he was joking that threatening someone physically is easier than breaking encryption. This reflects a shift in the real world where attackers are bypassing complicated systems by targeting people rather than technology.

From a simulated police raid to a forced Bitcoin transfer

Unlike conventional heists that target cash, jewelry or other material items, this attack specifically targeted digital cryptocurrency assets.

The attackers’ goal was basic: to force the victim to immediately transfer cryptocurrencies.

This form of theft can be hard to stop for several reasons:

• Stolen funds can be transferred anywhere in the world in minutes.

• Blockchain transactions are generally irreversible.

• Once transferred, funds can be moved quickly, which can make them hard to track and recover.

When the victim retains direct control over their wallet, criminals don’t have to steal hardware or breach security. They just need to force the victim to personally approve and send the transaction.

Understanding attacks is key in the cryptocurrency space

It is often much easier to threaten a person with a key than to try to break the code.

Instead of trying to hack a wallet, perpetrators can apply:

• Threats

• Physical violence

• Other forms of coercion

These methods are used to force victims to reveal private keys or authorize the transfer of funds. Such attacks bypass even the strongest technical security measures.

No matter how mighty the encryption is, a human vulnerability can render this security irrelevant.

Did you know? Some wealthy cryptocurrency holders now apply “decoy wallets” with diminutive balances. In a duress situation, they can reveal these wallets instead of their main holdings, which provides an additional layer of psychological and financial protection.

Why are these attacks becoming more constant?

Several factors influence this growth:

• Increase self-care: An increasing number of users now own their own private keys and manage their resources directly, making them more immediate and accessible targets.

• Visibility for high-value goals: Many cryptocurrency investors, founders and company executives maintain public profiles that make their assets and identities relatively basic to identify.

• Advances in cybersecurity: As digital wallet security improves and remote hacking becomes more hard, criminals are increasingly turning to a softer target: humans.

• Instant global liquidity: Cryptocurrency enables the almost instantaneous transfer of value anywhere in the world, without banks and intermediaries acting as gatekeepers.

In 2025 alone, the number of documented cases of verified key attacks has skyrocketed and increased 75% from 2024. Europe, and France in particular, stands out as an increasingly popular location for such incidents. Financial losses reached $40.9 million in 2025, an annual escalate of 44%. While kidnapping remained the main threat vector, physical assaults increased by 250%.

Why France experienced rapid growth

France has recently recorded a number of high-profile violent crimes involving cryptocurrencies:

• Kidnappings carried out in order to extort ransoms in cryptocurrencies.

• Home invasions that specifically target high-profile figures from the crypto industry.

• Coordinated activities of organized criminal groups aimed at stealing digital resources.

These repeated incidents indicate a change in criminal behavior:

• More deliberate efforts to identify those holding cryptocurrency.

• Increased surveillance of their physical locations and daily activities.

• Growing preference for direct physical targeting over purely digital methods.

As the popularity of cryptocurrencies increases, so does public awareness of who owns them. Unfortunately, the physical threats associated with this visibility are also increasing.

Why criminals are increasingly choosing coercion over hacking

Cryptocurrency security is becoming stronger. Hardware wallets, multi-signature setups, and data storage solutions make remote hacking much more hard.

However, coercion changes the equation.

Even the strongest technical security measures can fail if a victim is forced to unlock a device, reveal credentials, or authorize a transaction.

Coercive attacks completely bypass cryptographic security, target human access points, and exploit natural human responses.

For perpetrators, this approach is often faster and more reliable than trying to break through technical security.

Why Bitcoin is particularly vulnerable in situations of duress

Bitcoin’s basic architecture gives it considerable power, but it also creates significant vulnerability when the owner is under duress.

Its most vital features include:

• Possibility of immediate transfer of value

• No central entity capable of reversing transactions

• Access without authorization, worldwide

In a situation where the holder is forced to transfer funds, these features may result in:

• Assets are transferred almost instantly

• There is practically no real chance of recovery

• Attackers rapidly transfer funds between multiple addresses

The same characteristics that give Bitcoin its independence and value make recovering stolen funds extremely hard once they are transferred under duress.

Did you know? Private security companies have begun offering specialized security services for cryptocurrency investors, including travel risk assessments, home security audits, and digital footprint reduction strategies aimed at preventing targeted attacks.

How do the French authorities react?

French law enforcement authorities are actively investigating the incident, with specialized organized crime units leading the effort.

Potential criminal charges subject to review include:

Although authorities are increasing law enforcement in response to such incidents, these cases remain a significant challenge due to:

• Rapid cross-border flow of stolen assets

• The pseudonymous and irreversible nature of cryptocurrency transactions

• Involvement of organized and professional criminal groups

Key security takeaways for cryptocurrency owners

This incident highlights a fundamental change in the nature of cryptocurrency security threats.

Simply protecting technical systems is no longer enough. Protecting wallets, private keys and physical devices must now be combined with effective personal security measures.

Necessary protective steps include:

• Never publicly disclose or discuss the extent of your cryptocurrency holdings.

• Keep your real identity separate from your wallet addresses and properties.

• Use multi-signature wallets so that no single individual or compromised key can authorize transfers.

• Distribute signing permissions and key control among different geographical locations or trusted sites.