On this day, 5 years ago: “PolyNetwork hacked for $610M” Hackers drained $610M from Poly Network in one of DeFi's largest exploits, only for every asset to be returned within 15 days. The breach exposed severe vulnerabilities in cross-chain bridges and accelerated security standards across the DeFi sector. What lessons from the Poly Network hack still resonate today? Read more: history.harrydenley.com/even… #CryptoHistory #OnThisDay