BREACHCONFIRMED
Gerson Lehrman Group, Inc. Data Breach
Other • financial
Unknown
Records Affected
Nov 12, 2023
Disclosed
ransomware
Attack Vector
Data Exposed
Social Security NumbersNamesDates of BirthAddressesEmail AddressesPhone Numbers
Timeline
OccurredNovember 12, 2023
DiscoveredNovember 12, 2023
DisclosedNovember 12, 2023
Related Coverage
Last updated: February 6, 2026