H N Tax Inc
Incident posture
Linked entities
- Victim
- H N Tax Inc
- Threat actors
- 0 actors
- Sources
- 1 source
Timeline
Summary
H&N Tax, Inc d/b/a CSA Tax experienced a disruption to its computer network and subsequently learned that certain personal information had been accessed without authorization. After engaging a third‑party forensic specialist, the investigation concluded that names combined with Social Security numbers were among the data exposed, and the company began sending notification letters to affected clients. Edelson Lechtzin LLP is now investigating potential class action claims on behalf of individuals whose data may have been compromised.
Motives
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TTPs
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Description
On or about December 2, 2025, CSA Tax experienced a disruption to its computer network. The company promptly launched an investigation and engaged a third‑party computer forensic specialist. The forensic examination concluded on January 22, 2026, determining that certain personal information had been accessed without authorization. The investigation identified that the breach originated from the network disruption.
The accessed data may include names combined with Social Security numbers of clients. CSA Tax began sending notice letters to affected clients on February 20, 2026, informing them of the potential compromise. The notice letters described the nature of the exposed information and the timeframe of the incident. No further details about specific systems or attacker methods were disclosed in the public release.
In response to the breach, Edelson Lechtzin LLP announced on February 23, 2026 that it is investigating potential claims on behalf of CSA Tax clients whose data may have been compromised. The law firm stated it is evaluating the feasibility of a class action lawsuit to seek legal remedies for affected individuals. As of the press release date, the notification process was ongoing and the legal assessment remained in progress.
Sources
Sources available to members: 1 source.