Terillium data breach

Clerk's notes

On October 24, 2025, Terillium, a professional technology consulting firm, formally reported a data security incident to the New Hampshire Attorney General's office. The nature of the breach remains unspecified at this time, and the incident is currently under investigation to determine its full scope and impact. This filing indicates that unauthorized access to Terillium's systems was discovered.

For those who received a direct notification letter from Terillium, this means that your personal information was likely stored within the company's environment and may have been accessed by an unauthorized party. These letters are sent to inform you about the incident and provide details relevant to your specific situation.

It is crucial to carefully read any communication you receive from Terillium. This notification should explain what occurred, identify any specific types of personal information that were exposed, and outline any protective measures or identity monitoring services the company is offering. Pay close attention to any enrollment instructions for these services.

As a general precaution following any data security event, individuals should remain vigilant. Monitor your financial accounts for any unusual activity and consider placing a fraud alert or security freeze on your credit reports. Be wary of unsolicited emails, texts, or calls that request personal details, as these could be phishing attempts targeting affected individuals.

Given Terillium's role in managing sensitive client and employee data, the potential implications of this breach are significant. While the exact information involved has not been publicly specified, the company's official filing confirms the unauthorized access event.

If you have received a data breach notification letter from Terillium, it is advisable to understand your rights and potential next steps. Requesting a free case review and consultation can help you clarify your situation without obligation.

If a notification letter about this breach reached you, see every New Hampshire data breach on file or browse all cases.