A hacker stole $340M in a crypto heist, then returned most of it

A hacker exploited a bug in Blockstream’s Liquid Network wallet, stealing roughly 4,000 bitcoins—about $340 million—from the settlement exchange. Blockstream patched the vulnerability and recovered around 3,400 bitcoins, leaving roughly 600 bitcoins (≈$47 million) still in the hacker’s possession, while operations remain paused pending further security upgrades.