Major security incident just hit the crypto space. Upbit's wallet infrastructure got breached—attackers drained roughly $36 million in Solana-based tokens (around 54 billion KRW) to an unauthorized address.

This isn't just another hack headline. It's a brutal reminder that centralized custody comes with risks. When exchanges hold your private keys, you're trusting their security stack with your wealth.

The lesson here? If you're not controlling the keys, you're not really controlling the assets. Self-custody might feel cumbersome, but incidents like this show why it matters.