Bitcoin cold-wallet attack spreads to 4,500 addresses as losses near $89 million

60-second summary

A Bitcoin cold-wallet attack is spreading to 4,500 addresses, with losses nearing $89 million. Galaxy Research flagged a third wave of sweeps tied to weak Coldcard-generated keys. The attacker is now targeting smaller balances and changing how funds are collected onchain, indicating an evolving strategy to maximize gains. Market sentiment remains cautious amidst the ongoing security threat.