The Hyatt hotel chain discovered credit-card stealing malware [krebsonsecurity.com] in its payment system on November 30 and announced it December 23 [hyatt.com], in an apparent attempt to spread holiday cheer. Hyatt said customers can now feel confident using credit cards at Hyatt hotels worldwide. Hilton, Starwood, and Trump hotels [theverge.com] have enjoyed similar data breaches over the past few months.