Marriott said that it had identified "383 million records as the upper boundary for the total number of guest records that were involved," versus an original estimate of 500 million. Marriott divulged a data security breach of its Starwood network dating back to 2014 in November. In addition to passport numbers, the breach exposed names, mailing addresses, phone numbers, email addresses and payment card numbers, among other personal information. Marriott estimates that approximately 8.6 million unique payment card numbers, all of which were encrypted, were involved. Get the full story at Travel Weekly Read also "Clues in Marriott hack implicate China"