CertiK pointed out that wrench attacks—brutal physical assaults aimed at forcing cryptocurrency owners to surrender private keys or digital assets—have evolved into a sophisticated, transnational criminal enterprise. These incidents blend open-source intelligence gathering, social engineering, and outright violence, including kidnappings and extortion (along with other financial crime).According to blockchain security firm CertiK, the first four months of 2026 have already seen a sharp rise in such cases, u ...