Why ‘Wrench Attacks’ Are Becoming More Common and How to Stay Safe

More crypto investors are learning that the biggest threat to their digital wealth isn’t necessarily a hacker behind a screen, but could be someone at their front door. “Wrench attacks” are on the rise, targeting those who hold or flaunt significant crypto assets.

Unlike cyber theft, these attacks use physical force or intimidation to coerce victims into handing over their private keys or transferring funds on the spot. As crypto wealth becomes more visible and accessible, understanding this threat and how to protect yourself has never been more urgent.

How Was the Term Coined?

The phrase “wrench attack” was inspired by a satirical XKCD comic, where an attacker simply threatens a user with a wrench until they reveal their password. “That’s a very vivid image which perfectly describes an attack that uses brutal force to bypass encryption,” David Carvalho, CEO of Naoris Protocol, told Investopedia. 

Aneirin Flynn, CEO of Failsafe, adds, “Fear is faster and easier. Why spend months hacking code or phishing credentials when a wrench gets the keys in minutes?” In essence, these attacks require less skill, less planning, and far less effort than cybercrime.

Rise of Crypto Wealth

The explosion of crypto wealth has created a new class of targets. “There are simply more wealthy crypto owners who are public-facing, be it founders, influencers, or successful investors. They make an attractive target,” Carvalho told Investopedia. 

Flynn notes, “People are carrying their entire net worth in their pockets. Add public flexing, and wrench attacks become the shortcut: low-skill, high-reward, and brutally effective.” As more investors showcase their success online or at industry events, the risk of being singled out for an attack grows.

Examples of Some Wrench Attack Cases

Recent headlines are filled with stories of wrench attacks. In France, David Balland, co-founder of Ledger, was kidnapped and forced to transfer crypto at gunpoint. In New York, an Italian tourist was abducted and robbed of over $400,000 in Bitcoin after being lured through a dating app.

“It’s an increasingly concerning trend and wake-up call for wealthy crypto investors or founders to pay attention to their physical safety, perhaps for the first time since the inception of Bitcoin,” Carvalho told Investopedia.

What Crypto Owners Should Do to Protect Themselves

For now, discretion is your first and best line of defense. “No parading your riches on social media or at conferences, no flashy cars or expensive jewelry,” Carvalho advises. Store assets in multi-signature wallets and spread them across different locations. Accept that if you have significant crypto wealth, you are a target, and take steps to protect your physical safety.

Crypto wallets need to come standard with safety features such as duress codes and emergency protocols, but “this simply isn’t the case right now.” “When someone puts a gun to your head, it doesn’t matter how good the encryption on your hardware wallet is,” he says.

The Bottom Line

Wrench attacks are a stark reminder that crypto security isn’t just about strong passwords or cold storage, it’s about protecting yourself in the real world, too. As these attacks become more common, investors must combine digital best practices with physical caution, privacy, and smart deception.