A new report by blockchain security audit company CertiK indicates a significant increase in "wrench" attacks, a term for in-person, strong-arm tactics used to steal digital assets. These incidents involve physical coercion, violence, intimidation, or threats to compel victims to transfer digital assets, surrender private keys, unlock wallets, or reveal credentials.
CertiK found 52 wrench attacks worldwide through June 2026, marking a 33% increase from the 39 incidents reported during the same period in 2025. The company uses publicly available information and verified sources for its data, noting that the actual number of incidents is likely higher due to underreporting by victims and ongoing investigations.
The tactics extend beyond direct access to the primary crypto holder, often targeting family members or close associates who may have weaker security practices. Reported losses associated with these attacks have also surged, reaching $124 million in the first half of 2026, a substantial increase from $10.5 million in the first half of 2025. CertiK clarifies that these figures represent the overall financial scale, including frozen assets, rather than realized criminal profits.
Examples of wrench attacks include a kidnapping in France, a home invasion in Minnesota, and a carjacking incident in Connecticut. Security firms and law enforcement agencies have been raising awareness about the growing threat of these physical attacks on cryptocurrency holders over the past few years.
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CertiK reported a 33% year-over-year increase in "wrench" attacks, physical coercion incidents targeting cryptocurrency holders, during the first half of 2026. These attacks, which involve violence or intimidation to force asset transfers, highlight a growing trend of real-world threats impacting digital asset security.