BREACHCONFIRMED
CMC Tax Services Data Breach
accounting_firm • financial
Unknown
Records Affected
Nov 30, 2020
Disclosed
third party
Attack Vector
Data Exposed
Social Security NumbersNamesDates of Birth
Timeline
OccurredInvalid Date
DiscoveredJune 20, 2021
DisclosedNovember 30, 2020
Related Coverage
Last updated: February 6, 2026