Main Electric Supply Company, LLC (“MES”) data breach
Incident readout
- Company
- Main Electric Supply Company, LLC (“MES”)
- Reported to
- California Attorney General
- Filed
- September 12, 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
Main Electric Supply Company, LLC (“MES”) appears to be a wholesale distributor and retailer specializing in electrical equipment, lighting, and industrial supply components. In the course of business operations, such companies typically collect and store sensitive personal information from employees, contractors, and commercial customers, including payroll data, tax identification numbers, and payment processing details. This security incident was officially reported to the California Attorney General in 2025, confirming that unauthorized access to company systems occurred. If you received a data breach notification letter from MES, it indicates that your personal information was likely contained within the impacted files. This notice is intended to inform you of the nature of the exposure so that you may take appropriate steps to monitor your accounts and protect your identity.
See every breach reported in California or read what to do after a ransomware attack.
After the Main Electric Supply Company, LLC incident: what to do and your options
- What should I do after getting the Main Electric Supply Company, LLC 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 Main Electric Supply Company, LLC offer free credit monitoring?
- Look for an enrollment code in your Main Electric Supply Company, LLC notice. Companies that offer free credit monitoring after a breach usually include it there, with a deadline to activate. Enrolling does not give up your right to bring a claim.
- Can I sue Main Electric Supply Company, LLC over the data breach?
- It depends on what was exposed, the law in California 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 Main Electric Supply Company, LLC 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 Main Electric Supply Company, LLC 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 Main Electric Supply Company, LLC. 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 Main Electric Supply Company, LLC data breach letter legit or a scam?
- A notice from Main Electric Supply Company, LLC in the mail matches the breach Main Electric Supply Company, LLC reported to the California Attorney General on September 12, 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 Main Electric Supply Company, LLC through a phone number or website you find yourself.
- How much could a Main Electric Supply Company, LLC data breach settlement or claim be worth?
- There is no set amount, and no Main Electric Supply Company, LLC 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 California
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- STS Aviation GroupCalifornia Attorney General · Filed October 19, 2026Count not stated
- Citizens BankCalifornia Attorney General · Filed October 19, 2026Count not stated
- John G. Yphantides, a Professional Law CorporationCA Attorney General · Filed October 16, 2026Count not stated
- Neuro Wellness SpaCalifornia Attorney General · Filed October 16, 2026Count not stated
- Frazer LLPCalifornia Attorney General · Filed October 16, 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.