Heather Benzmiller Sultanian
Sidley Austin LLP
- Address of record
- One S. Dearborn Street, Chicago, IL 60603, 312-853-7000
- Phone
- (312) 853-7000
Contact details as filed with the court in the cases below.
Case history
Publicly tracked matters where this attorney is listed as counsel.
MOVEit Customer Data Security Breach Settlement
Cadence Bank used a third-party file transfer application called MOVEit Transfer that had a security vulnerability. This vulnerability led to a data breach between May 28, 2023 and May 31, 2023, where personally identifying information of customers was compromised. Cadence began notifying affected individuals in September 2023.
- Claim deadline
- June 4, 2026
- Represents
- Genworth Financial, Inc., Genworth Life Insurance Company, Genworth Life and Annuity Insurance Company
MOVEit Nuance Data Security Breach Settlement
Nuance Communications, Inc. experienced a data security breach between May 27-31, 2023, affecting personally identifiable information of customers. The breach resulted from an alleged vulnerability in MOVEit Transfer, third-party file transfer software that Nuance used in its ordinary business operations. Nuance is settling claims related to this 2023 MOVEit Security Incident, though litigation against Progress Software Corporation (the MOVEit software licensor) continues.
- Claim deadline
- March 30, 2026
- Represents
- Genworth Financial, Inc., Genworth Life Insurance Company, Genworth Life and Annuity Insurance Company
Labcorp Data Breach Settlement
Labcorp allegedly suffered a data breach involving customer diagnostic services information through American Medical Collection Agency. The company has agreed to settle for $35 million related to this alleged security breach.
- Settlement fund
- $35M
- Claim deadline
- September 3, 2026
- Represents
- QUEST DIAGNOSTIC INCORPORATED, QUEST DIAGNOSTICS CLINICAL LABORATORIES, INC.
“Recovery” and “exposure” refer to total disclosed settlement funds in associated cases, not money personally won or lost by an attorney. Settlements generally resolve disputed allegations without a finding that either side won. Data comes from public court dockets and may be incomplete.