Mercury Wire Data Breach Lawsuit Investigation
Mercury Wire is notifying 361 individuals that certain personal information was exposed during a recent cybersecurity incident reported on December 29, 2025. If you received a data breach letter, you may be entitled to free credit monitoring and could qualify for financial compensation. Read on to understand your rights and the next steps.
Download Official Breach Notice (PDF)
What Happened?
According to a filing with the Massachusetts Attorney General, Mercury Wire Products Inc. (“Mercury Wire”) identified unauthorized activity involving its systems and completed an internal review to determine whose information was involved. On December 29, 2025, the company began mailing letters to all affected Massachusetts residents.
What Information Was Exposed?
The notice indicates that the following data element was impacted:
- Social Security numbers
How Many People Were Affected?
The company reported the breach to the Commonwealth of Massachusetts as affecting 361 individuals.
How Mercury Wire Responded
After completing its investigation, Mercury Wire states that it obtained resources to provide notice and complimentary identity-protection services. The company is offering:
- Single-bureau credit monitoring, report, and score alerts for 24 months through Cyberscout, a TransUnion company.
- Proactive fraud assistance in the event of suspicious activity.
Impacted individuals have 90 days from the date of the letter to enroll at bfs.cyberscout.com/activate using the unique code provided in their letter.
Steps You Can Take Now
Mercury Wire recommends the following immediate actions (all are free):
- Review your credit reports at AnnualCreditReport.com.
- Place a one-year fraud alert or a credit freeze with any of the three bureaus:
- Equifax — 1-888-298-0045
- Experian — 1-888-397-3742
- TransUnion — 1-833-799-5355
- Learn more about identity-theft recovery at IdentityTheft.gov.
- Contact Mercury Wire’s assistance line at 1-800-405-6108 for additional details.
Company Overview
Mercury Wire Products Inc. (“Mercury Wire”) designs and manufactures custom wire and cable solutions.
- Website: mercurywire.com
- Headquarters: 1 Mercury Dr., Spencer, MA, USA
- Industry: Electrical/Electronic Manufacturing
- Year Founded: 1967
- Employees: 51–200
- Social: LinkedIn | X | Facebook | YouTube
Frequently Asked Questions
I received a data breach letter from Mercury Wire — what should I do?
Follow the enrollment instructions in your letter to activate the free credit monitoring within 90 days, review your credit reports, and consider placing a fraud alert or credit freeze.
How do I submit a claim related to the Mercury Wire data breach?
You may be eligible to pursue compensation through a privacy lawsuit. Keep a copy of your letter and any fraud evidence, then consult a data-breach attorney to explore your options.
What information did the Mercury Wire breach expose?
Mercury Wire states that Social Security numbers were involved.
Did Mercury Wire offer credit monitoring, and for how long?
Yes. The company is offering 24 months of single-bureau credit monitoring, credit reports, scores, and fraud assistance through Cyberscout.
How many people were affected by the Mercury Wire breach?
A total of 361 individuals were notified, according to the Massachusetts Attorney General filing.
How can I get the official breach notice (PDF) for Mercury Wire?
You can download it directly from the Massachusetts Attorney General’s website using the button near the top of this page.
