← Fiserv

2023 MOVEit breach — 837,000 records

2023 837.0K records affected Share on X

Data compromised

Names, SSNs

Technical writeup

May 27–31, 2023. Clop ransomware exploited MOVEit zero-day. Unauthorized access to Fiserv MOVEit server. Flagstar Bank customers affected: names, SSNs. Part of broader MOVEit campaign (2,000+ orgs). Identity monitoring and call center support offered.

Root cause

MOVEit zero-day; Clop ransomware.

References