Access to the Starwood reservation network since 2014 exposes Marriott guest records (2018)
Legacy Starwood database left unsegmented following acquisition; attackers extracted passport numbers and encrypted payment cards of 383M guests.
The failure pattern
Watch the pattern: Insufficient segmentation lets a foothold spread
Safeguards that address it
CollectSEA's engineering analysis of what would have prevented or contained this failure.
- Secure acquired systems during integrationAssess, segment and monitor acquired networks before connecting them and before years pass undetected.
- Minimise and encrypt sensitive guest dataTokenise or encrypt passport and payment fields and restrict who can query reservation data in bulk.
Related standards
CollectSEA's mapping through this incident's failure pattern; not an official determination by the standards bodies.
- RA-5 Vulnerability Monitoring and Scanning
- SC-7 Boundary Protection
- SI-2 Flaw Remediation
- RV.1.1 Gather vulnerability information from public sources
- RV.2.2 Plan and implement risk responses
- Goal 4 Security patches
- CWE-1395 Dependency on Vulnerable Third-Party Component
- CWE-653 Improper Isolation or Compartmentalization
Building something similar?
Describe your design and see every precedent that applies, with safeguards you can hand to your coding agent.
Incidents with the same pattern
Ransomware shuts down CDK Global's dealer-management platform for about 15,000 dealerships (2024)
Ransomware forced shutdown of core dealer management SaaS platform, halting sales, financing, and parts ordering for 15,000 auto dealerships.
Cyberattack disrupts Johnson Controls' internal IT infrastructure (2023)
Ransomware encrypted virtual hypervisors; halted manufacturing and billing operations incurring $27M in direct remediation costs.
Cyberattack takes Clorox IT systems offline and forces manual order processing (2023)
Ransomware encrypted internal ordering databases; lack of decoupled offline queue forced multi-week manual processing and inventory write-downs.
Major entertainment company hit by an SMB worm with destructive wiper components (2014)
US-CERT alert TA14-353A describes an SMB worm tool used against a major entertainment company that spreads by brute-forcing Windows SMB shares.
Boston Scientific Corp discloses a cybersecurity incident (SEC 8-K, September 2026)
As previously disclosed in a Current Report on Form 8-K filed on August 26, 2026 with the Securities and Exchange Commission, on August 25, 2026, Boston Scientific Corporation (the “ Company ”) identified a cybersecurity…
Park Dental Partners, Inc. discloses a cybersecurity incident (SEC 8-K, September 2026)
On August 28, 2026 , Park Dental Partners, Inc. (“we” or the “Company”) identified unauthorized access to its computer network.