Coinbase says hackers accessed data for a “small subset” of users, but not login credentials, expects to incur $180M-$400M in costs, and refuses a $20M ransom (Niket Nishant/Reuters)

Niket Nishant / Reuters:
Coinbase says hackers accessed data for a “small subset” of users, but not login credentials, expects to incur $180M-$400M in costs, and refuses a $20M ransom  —  Crypto exchange Coinbase (COIN.O) said on Thursday it expects to incur between $180 million and $400 million in costs related to a cyber attack.