The cyberattack on SITA, a nearly ubiquitous airline service provider, has compromised frequent-flyer data across many carriers. Singapore Airlines reported more than 580,000 impacted customers alone, meaning the compromise could ultimately impact millions of users. Airline members of the Star Alliance, including Luthansa, New Zealand Air and Singapore Airlines, along with OneWorld members Cathay Pacific, Finnair, Japan Airlines and Malaysia Air, have already started communicating with its at-risk users.
Source: https://threatpost.com/supply-chain-cyberattack-airlines/164549/