Core Insights - In December 2025, approximately 26 significant cryptocurrency security incidents occurred, resulting in total losses of around $76 million, a decrease of over 60% compared to losses of about $194 million in November [1] Summary by Category Security Incidents - The most notable incident involved address poisoning, leading to a loss of approximately $50 million from wallet 0xcB80...819 [1] - A private key leak resulted in the theft of about $27.3 million from multi-signature wallet 0xde5f...e965 [1] Loss Rankings - The top five incidents by individual loss in December were: 1. Multi-signature wallet 0xde5f...e965: $27.3 million 2. Babursol: $22 million 3. Trust Wallet: $8.5 million 4. Unleash Protocol: $3.9 million 5. Flow: $3.9 million [1]