Blockchain security has made software exploits harder to pull off, but a troubling new threat is emerging: criminals are increasingly targeting crypto holders through physical coercion, home invasions, and forced transfers instead. A new threat intelligence report from CertiK reveals that violent physical extortion attacks, commonly called "wrench attacks," have reached 52 documented global cases, with the total value of targeted assets surging more than tenfold over the past year.

Why Are Physical Attacks on Crypto Holders Escalating?

The sudden spike in physical coercion stems from a fundamental mismatch in security defenses. As decentralized protocols implement multi-audit standards and real-time monitoring systems, direct smart contract drains have become mathematically complex and rapidly traceable. Criminals are now realizing that the human element remains the weakest link in self-custody architectures, where individuals hold their own private keys without relying on a third-party custodian.

Bad actors are leveraging open-source intelligence, social media wealth displays, and compromised database leaks to locate high-net-worth individual holders and operational executives. Unlike code exploits that rely on technical flaws, physical attacks use physical leverage and fear to override account controls, rendering conventional single-key hardware wallets entirely ineffective if an attacker forces the owner to unlock and sign transactions in front of them.

"We are observing a structural pivot in threat actor methodologies. As smart contracts become significantly harder to compromise, criminals are realizing that the human layer remains the single point of failure in self-custody architectures," noted Sarah Jenkins, senior threat analyst at CertiK.

Sarah Jenkins, Senior Threat Analyst at CertiK

How Do Physical Threat Vectors Compare to Smart Contract Exploits?

The contrast between the two attack types reveals why criminals are shifting tactics. Smart contract exploits target code vulnerabilities like reentrancy bugs or flash loan attacks, but these have become increasingly difficult to execute as auditing tools improve. Physical attacks, by contrast, leverage fear and coercion to force victims to sign transactions directly, making them harder to trace and prevent through automated defenses.

The scale of this shift is striking. Targeted asset values across documented physical attacks jumped tenfold over the past year, reflecting coordinated operations against high-conviction traders and protocol founders. This represents a fundamental change in how criminals approach crypto theft, moving away from exploiting code and toward exploiting human vulnerability.

Steps to Protect Against Physical Threat Vectors

Security architects emphasize a multi-layered approach to operational security, or OpSec, to defend against physical threats. High-net-worth investors and fund managers should implement several key protections:

• Multi-Party Computation (MPC) or Multi-Signature Vaults: Eliminate single-key dependency by requiring multiple parties or geographically distributed locations to authorize transactions, ensuring no single person present can execute a transfer under duress.
• Delayed-Execution Timelocks: Implement hard delays that prevent real-time transaction finality during duress scenarios, giving victims time to alert authorities or move assets before a forced transfer completes.
• Strict Digital Privacy Practices: Avoid public disclosure of crypto holdings, maintain low social media visibility regarding wealth, and employ decoy wallets with minimal balances to reduce the likelihood of targeted surveillance.

"A hardware wallet in a physical safe offers zero protection if an attacker forces you to unlock it. Institutional and individual custody models must transition toward threshold cryptography where no single human geographically present can execute a transaction," explained Alex Chen, Web3 operational security consultant.

Alex Chen, Web3 Operational Security Consultant

The shift toward physical attacks underscores a critical reality for crypto holders: as protocol-level security improves, the focus of criminal activity moves to the human layer. For institutional players and retail holders alike, the message is clear: self-custody requires more than just a hardware wallet. It demands a comprehensive operational security strategy that accounts for the physical safety of keyholders themselves.