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April 12, 2016 Verified Marketing

KnownCircle 2016 Data Breach

The KnownCircle 2016 data breach covers data obtained from the former marketing-automation platform for real-estate, insurance, and professional-service providers.

2 Million
Email Identifiers
7
Data Types
Critical
Severity
Yes
Verification

Exposed Data Types

7
Email addresses
Email messages
Genders
Names
Passwords
Phone numbers
Physical addresses

Additional Information

Added DateNovember 17, 2018
Breach DateApril 12, 2016
Domainknowncircle.com
SourceVerified breach record
Last Content UpdateJuly 29, 2026

Verification and editorial method

LeakData compares the incident name, date, affected-record count, and exposed data types with accessible sources. Unverified fields are not presented as facts, and records are updated when new evidence becomes available.

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Company Information

Company NameKnownCircle
SectorMarketing
CountryUnited States
Websiteknowncircle.comArchived site

Risk Level

Critical

The reported impact exceeds 1 million and falls within the critical severity band.

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