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Starwood reservation system breach (2014–2018)

2018 500.0M records affected Share on X

Data compromised

Names, Addresses, Payment card details, Passport numbers, Credentials, Payment information

Technical writeup

Unauthorized access to Starwood's guest reservation database from 2014 until discovery in 2018. Exposed names, addresses, passport numbers, travel details, and encrypted payment cards.

Root cause

Compromised credentials and long-undetected access to legacy Starwood systems post-acquisition.

References