All Breaches
March 17, 2026 Verified Sensitive Record Financial Services

Markel Insurance 2026 Data Breach

The Markel Insurance 2026 data breach was a confirmed security event in which an unauthorized actor used social engineering to deceive two employees and gain access to a limited portion of company…

At least 268
Affected People
5
Data Types
At least Low
Severity
Yes
Verification

Exposed Data Types

5
Personal information
Names
Social security numbers
Driver’s license numbers
Medical information

Additional Information

Added DateJuly 27, 2026
Breach DateMarch 17, 2026
Domainmarkel.com
SourceCalifornia Attorney General filing and Markel notice confirming social-engineering access to systems containing personal information
Last Content UpdateJuly 27, 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 NameMarkel Insurance
SectorFinancial Services
CountryUnited States
Websitemarkel.com

Risk Level

At least Low

This classification is based on a reviewed lower bound; the actual impact and severity may be higher.

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