The hacking group RansomHub claims to be behind the attack that hit Christie's, and threatens to release sensitive information about the auction house's clients (Zachary Small/New York Times)

Zachary Small / New York Times:

The hacking group RansomHub claims to be behind the attack that hit Christie’s, and threatens to release sensitive information about the auction house’s clients  —  The hacking group RansomHub is threatening to release “sensitive personal information” about the auction house’s clients.