Cryptocurrency security took a hard hit in 2025. Hackers pocketed $3.4 billion across the year—a sobering number that demands attention. Here's what caught my eye: roughly 70% of those losses came from just three major incidents. The headline theft? A $1.5 billion breach at a leading exchange sent shockwaves through the market. What this really tells us is that while trading volumes and new projects keep climbing, security vulnerabilities remain a critical weak point. Exchanges and platforms need to raise their game—better fund segregation, multi-sig protocols, and real-time threat monitoring aren't luxuries anymore. For traders and hodlers, this is a reminder: not your keys, not your coins. Where you park your assets matters.