132M accounts from Exactis (exactis.com) were exposed in this breach. Besides email addresses, it included credit status information, dates of birth and education levels.
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Credit status informationDates of birthEducation levelsEmail addressesEthnicitiesFamily structureFinancial investmentsGendersHome ownership statusesIncome levelsIP addressesMarital statusesNamesNet worthsOccupationsPersonal interestsPhone numbersPhysical addressesReligionsSpoken languages
In June 2018, the marketing firm Exactis inadvertently publicly leaked 340 million records of personal data. Security researcher Vinny Troia of Night Lion Security discovered the leak contained multiple terabytes of personal information spread across hundreds of separate fields including addresses, phone numbers, family structures and extensive profiling data. The data was collected as part of Exactis' service as a "compiler and aggregator of premium business & consumer data" which they then sell for profiling and marketing purposes. A small subset of the exposed fields were provided to Have I Been Pwned and contained 132 million unique email addresses.
Source: Have I Been Pwned (CC BY 4.0)