In early 2019, the Malaysian airline Malindo Air suffered a data breach that exposed tens of millions of customer records. Containing 4.3M unique email addresses, the breach also exposed extensive personal information including names, dates of birth, genders, physical addresses, phone numbers and passport details. The data was later extensively shared on popular hacking forums.
Source: HaveIBeenpwned
Source Link: https://haveibeenpwned.com/PwnedWebsites#MalindoAir