Cryptocurrency-targeted hacking and crime has become more serious than ever in 2025. According to Chainalysis, H1 2025 (January-June) saw over $2.17B (approximately 2.9T KRW) in cryptocurrency disappear through various hacking and crimes. North Korea''s ByBit exchange hack stole $1.5B in a single incident — the largest single hacking damage ever recorded. Representing 69% of total H1 damages, this exceeds total 2024 hacking damage and is 17% more than 2022.
North Korean hackers infiltrate organizations using social engineering, AI tools (ChatGPT-like) for sophisticated email phishing, covertly employing their people at IT companies, and other methods. Individual wallet hacking methods have also diversified beyond stealing passwords to "wrench attacks" — physically kidnapping or threatening to obtain passwords — which tends to surge when Bitcoin prices rise. Stolen coins are laundered through bridges (cross-chain transfers), mixers, and DEXes, or left in wallets long-term ("HODL"), with hackers typically paying 2-14x market average fees for speed to evade tracking.
Countries with heavy cryptocurrency use — US, Germany, Russia, Canada, Japan, Indonesia, Korea — concentrate victims. On blockchain analysis: transaction records remain on the blockchain, enabling police to trace fund flows and catch criminals when properly analyzed (as demonstrated in the Philippines kidnapping/murder case where Chainalysis blockchain analysis froze some ransom funds). Security recommendations: exchanges need enhanced security audits, multi-signature, and executive verification; individual investors need cold wallets (internet-separated), minimal personal information exposure, avoiding social media asset disclosure; those with large cryptocurrency holdings should consider physical safety risks including daily routines, travel routes, social relationships, and privacy exposure. In 2025, cryptocurrency ecosystem is "no longer a safe zone." North Korea-led state-sponsored large-scale hacking, AI-leveraged new crime types, and violence-combined hacking continue evolving — while simultaneously blockchain analytics are becoming more sophisticated. "Digital asset freedom and decentralization" must now coexist with vigilance against security threats and physical dangers. 2025 is a critical inflection point for the entire cryptocurrency ecosystem.
