Marriott International says that the data breach was less massive than originally thought. The breach affected 383 million records rather than the 500 million originally said to have been compromised. Marriott says that there is no evidence that the criminals got the key required to unencrypting the files. The number of unencrypted passport numbers that were accessed is 5.25 million. Marriott will have a mechanism available on its website for guests to check in order to see whether their passport number was accessed by the perpetrators, the hotel chain says.”]
Source: https://www.darkreading.com/attacks-breaches/marriott-sheds-new-light-on-massive-breach