Upbit Hack Triggers Solana Freeze, Impacts ₩44.5B in Assets

South Korean cryptocurrency exchange Upbit was hit by a significant security breach on November 27th, 2025, resulting in the unauthorized withdrawal of approximately ₩44.5 billion ($33–$36 million) worth of Solana-based digital assets. The incident prompted an immediate halt to all deposit and withdrawal services related to the Solana network as Upbit scrambled to contain the attack and conduct thorough inspections. 💰