Linemaster Switch Corporation data breach
Incident readout
- Company
- Linemaster Switch Corporation
- Reported to
- Massachusetts Attorney General
- Filed
- October 20, 2025
- People affected
- Not stated in the filing
- Incident type in filing
- Not stated
- Our review
- Investigation Open
Was this a ransomware attack?
The filing does not say ransomware was involved. We do not label an incident ransomware unless the company’s report says so. Whatever the cause, the steps to protect yourself and the legal question are the same.
What we know
Linemaster Switch Corporation operates as a specialized manufacturer and industrial supplier, renowned for producing foot switches and electronic control devices utilized across demanding sectors such as medical equipment manufacturing, industrial automation, and aerospace engineering. Because of its pivotal role in supply chains requiring high-precision components, the company maintains extensive digital infrastructure. This operational framework necessitates the collection, storage, and processing of vast amounts of sensitive data, including proprietary engineering blueprints, vendor contracts, and the comprehensive personal identifiable information (PII) of its current and former workforce, as well as business partners and clients. In 2025, Linemaster Switch Corporation reported a significant data security incident to the Massachusetts Attorney General, signaling a critical compromise of its network environment. Breaches of this nature within industrial manufacturing and technology supply chains typically involve sophisticated cyberattacks, such as ransomware deployments, unauthorized network intrusions, or third-party vendor compromises. Attackers frequently exploit vulnerabilities in legacy systems or remote access protocols to infiltrate corporate networks, deploy malware to encrypt operational files, and exfiltrate confidential databases containing deeply personal records before detection occurs. The exposure resulting from this incident compromises multiple categories of highly sensitive information, each carrying severe risks for the affected individuals. Exposed data fields frequently include full names, dates of birth, Social Security numbers, home addresses, and confidential employment or banking details. When Social Security numbers and financial records are compromised, victims face an immediate and prolonged risk of identity theft, fraudulent credit card applications, unauthorized bank account takeovers, and fraudulent tax filings. The psychological toll and financial exposure resulting from these threats can impact victims for years following the initial disclosure. As an entity operating within the commercial sector and employing residents of Massachusetts, Linemaster Switch Corporation was bound by strict legal obligations under state data protection statutes, including the Massachusetts Data Privacy Law and Massachusetts General Laws Chapter 93H. These regulations mandate the implementation and maintenance of comprehensive information security programs designed to safeguard personal data against unauthorized access, disclosure, or misuse. The occurrence of a widespread data breach strongly suggests potential failures in maintaining adequate administrative, technical, and physical safeguards, raising serious questions about whether the company met its legal duty of care. Receiving a data breach notification letter from Linemaster Switch Corporation serves as formal legal notice that your private information was compromised due to inadequate security practices. Under consumer protection law, the receipt of this notice establishes legal standing to participate in a class action lawsuit aimed at holding the company accountable for failing to protect your data. You do not need to prove that you have already suffered actual financial loss or identity theft to qualify for legal relief. Our firm evaluates these cases on a contingency fee basis, meaning you pay absolutely nothing out of pocket unless we successfully recover compensation on your behalf.
See every breach reported in Massachusetts or read what to do after a ransomware attack.
After the Linemaster Switch Corporation incident: what to do and your options
- What should I do after getting the Linemaster Switch Corporation data breach notice?
- Keep the letter and the envelope, and note the date it arrived. Freeze your credit with Equifax, Experian and TransUnion, change any passwords the notice mentions, and sign up for any free credit monitoring the letter offers. Then check whether you may have a claim.
- Did Linemaster Switch Corporation offer free credit monitoring?
- Check your letter from Linemaster Switch Corporation. If free credit or identity monitoring is offered, the enrollment code and deadline are printed in the notice itself. Using the free service won't stop you from joining a lawsuit or settlement later.
- Can I sue Linemaster Switch Corporation over the data breach?
- It depends on what was exposed, the law in Massachusetts and your own state, and whether you've been harmed. Most people take part through a class action rather than suing alone. Keep your notification letter — it's the proof that connects you to the breach.
- Do I need a Linemaster Switch Corporation data breach lawyer or attorney?
- Whether the company's systems were encrypted by ransomware or data was simply taken, the legal question is the same: did it protect your information the way the law requires? An attorney can review your notice for free, and these cases are usually handled on contingency.
- Is there a Linemaster Switch Corporation data breach class action lawsuit?
- Law firms often open an investigation after a breach notice like this one, and a class action lawsuit may follow. This page doesn't confirm that a lawsuit has been filed against Linemaster Switch Corporation. You usually don't have to join a class action to be included — if a settlement is reached, class members are notified and can file a claim.
- Is the Linemaster Switch Corporation data breach letter legit or a scam?
- A notice from Linemaster Switch Corporation in the mail matches the breach Linemaster Switch Corporation reported to the Massachusetts Attorney General on October 20, 2025. Check that the company name and dates in your letter match that filing. A real notice of data security incident won't ask for your password, Social Security number or a payment — if it does, contact Linemaster Switch Corporation through a phone number or website you find yourself.
- How much could a Linemaster Switch Corporation data breach settlement or claim be worth?
- There is no set amount, and no Linemaster Switch Corporation settlement is confirmed here. In past data breach settlements, payments depended on what data was exposed and on documented losses — fraud, out-of-pocket costs and time spent dealing with the breach. Keep receipts and records; they're what damages claims are built on.
Other breaches reported in Massachusetts
- Analytix SolutionsMassachusetts Attorney General · Filed August 7, 2026Count not stated
- Builders FirstSource, Inc.Massachusetts Attorney General · Filed August 7, 2026Count not stated
- MONROE COUNTY HEALTH CENTERMassachusetts Attorney General · Filed August 7, 2026Count not stated
- National Corporate HousingMassachusetts Attorney General · Filed August 7, 2026Count not stated
- The Chartwell Law Offices, LLPMassachusetts Attorney General · Filed August 7, 2026Count not stated
- The Financial Guys, LLC, and affiliatesMassachusetts Attorney General · Filed August 7, 2026Count not stated
Attorney advertising. This page reflects a public regulator filing; it does not mean a lawsuit has been filed or that the company did anything unlawful. Submitting a review request does not create an attorney-client relationship.