Nucor Corporation data breach
Incident readout
- Company
- Nucor Corporation
- Reported to
- New Hampshire Attorney General
- Filed
- June 30, 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
Nucor Corporation is a major industrial manufacturing company primarily engaged in the production of steel and steel products. As a large-scale employer and business entity, the company typically collects and maintains sensitive personal information, including employee payroll records, Social Security numbers, banking details for direct deposit, and government-issued identification. In 2025, Nucor Corporation officially reported a data security incident to the New Hampshire Attorney General, confirming that unauthorized parties may have accessed company systems. If you have received a formal data breach notification letter from the company, it indicates that your personal information was likely contained within the compromised environment. This notice is intended to inform you of the incident and provide guidance on the steps you should take to protect your identity.
See every breach reported in New Hampshire or read what to do after a ransomware attack.
After the Nucor Corporation incident: what to do and your options
- What should I do after getting the Nucor 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 Nucor Corporation offer free credit monitoring?
- Look for an enrollment code in your Nucor Corporation notice. Companies that offer free credit monitoring after a breach usually include it there, with a deadline to activate. Signing up doesn't waive any legal rights you may have.
- Can I sue Nucor Corporation over the data breach?
- It depends on what was exposed, the law in New Hampshire 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 Nucor 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 Nucor 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 Nucor 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 Nucor Corporation data breach letter legit or a scam?
- A notice from Nucor Corporation in the mail matches the breach Nucor Corporation reported to the New Hampshire Attorney General on June 30, 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 Nucor Corporation through a phone number or website you find yourself.
- How much could a Nucor Corporation data breach settlement or claim be worth?
- There is no set amount, and no Nucor 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 New Hampshire
- Janome America, Inc.New Hampshire Attorney General · Filed July 31, 2026Count not stated
- Sullivan Environmental ServicesNew Hampshire Attorney General · Filed July 31, 2026Count not stated
- City of New Britain, Inc.New Hampshire Attorney General · Filed July 30, 2026Count not stated
- New Hampshire Housing Yardi’s RentCafeNew Hampshire Attorney General · Filed July 30, 2026Count not stated
- Pocket FMNew Hampshire Attorney General · Filed July 30, 2026Count not stated
- Werth Wealth Management, LLCNew Hampshire Attorney General · Filed July 29, 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.