DataBreachInformation.com
MonitoringIndiana AG filing · May 5, 2026

Diamond Chemical Co LLC Files Data Breach Report in Indiana

Diamond Chemical Co LLC reported an unspecified data security incident to the Indiana Attorney General on May 5, 2026. This breach, which occurred in July 2025, involved the potential exposure of various personal and financial details. Individuals affected should review their financial accounts and personal information.

State
Indiana
Breach date
July 26, 2025
Reported
May 5, 2026

What may have been exposed

  • Full Name
  • Social Security Number
  • Date of Birth
  • Mailing Address
  • Wage and Compensation Information
  • Tax Return Information
  • Direct Deposit Account Details
  • Health Insurance Records

Diamond Chemical Co LLC, a company operating in chemical manufacturing, officially filed notice of a data breach with the Indiana Attorney General on May 5, 2026. The company indicated that this security incident took place on July 26, 2025, though the specific nature of the breach was not detailed in public records.

The information potentially compromised during this event includes Full Name, Social Security Number, Date of Birth, Mailing Address, Wage and Compensation Information, Tax Return Information, Direct Deposit Account Details, and Health Insurance Records. The exposure of these types of data can significantly increase the risk of identity theft, financial fraud, and other forms of personal information misuse for affected individuals.

Individuals who receive a notification regarding this incident from Diamond Chemical Co LLC are advised to take precautionary measures. These steps typically include carefully reviewing financial statements and credit reports for any suspicious activity. Placing a fraud alert or security freeze on credit files with the major credit bureaus is also a widely recommended step to help prevent unauthorized new accounts from being opened in one's name.

This information is based on public filings submitted to state regulators. DataBreachInformation.com provides a neutral, fact-based record of reported U.S. data breach incidents to assist the public in verifying notices and researching official filings.

What to do if you were affected

Based on the categories of information reported in this filing, these steps can help limit the risk of identity theft and fraud.

  • Freeze your credit

    Place a free credit freeze with Equifax, Experian, and TransUnion. A freeze blocks new accounts from being opened in your name and can be lifted anytime.

  • Guard against tax fraud

    File your tax return as early as possible and consider requesting an IRS Identity Protection PIN so no one can file a fraudulent return in your name.

  • Watch your financial accounts

    Review bank and card statements for unfamiliar activity and turn on transaction alerts. Report anything you don't recognize to your bank right away.

  • Check for medical identity theft

    Review the Explanation of Benefits statements from your health insurer for services or claims you never received, which can signal misuse of your medical identity.

  • Stay alert to targeted scams

    Be cautious of calls, texts, or emails that reference this breach. Legitimate organizations won't ask you to confirm sensitive details through an unsolicited message.

  • Keep your notification letter

    Save the notice you received. It documents that your information was involved and is often needed to enroll in any credit monitoring offered or to join a related legal claim.

What to know about the Diamond Chemical Co LLC data breach

How many people were affected by the Diamond Chemical Co LLC data breach, and what was exposed?
The filing does not give a count of affected people and lists the following information as involved: Full Name, Social Security Number, Date of Birth, Mailing Address, Wage and Compensation Information, Tax Return Information, Direct Deposit Account Details, Health Insurance Records. Your own letter is the best guide to what was exposed about you, since notices are usually tailored to each person.
Where can I see the official Diamond Chemical Co LLC breach notice?
Diamond Chemical Co LLC's report is published by the Indiana Attorney General: https://www.in.gov/attorneygeneral/consumer-protection-division/id-theft-prevention/security-breaches/#331diamond-chemical-co-llc-2026 Compare it with the letter you received to confirm the dates and details match.
What should I do after getting the Diamond Chemical Co 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.
Is the Diamond Chemical Co LLC data breach letter legit or a scam?
A notice from Diamond Chemical Co LLC in the mail matches the breach Diamond Chemical Co LLC reported to the Indiana Attorney General on May 5, 2026. 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 Diamond Chemical Co LLC through a phone number or website you find yourself.
Did Diamond Chemical Co LLC offer free credit monitoring?
Any free monitoring Diamond Chemical Co LLC is offering will be described in the notice you received, along with an activation code and a sign-up deadline. Because Social Security numbers are listed in this filing, identity monitoring and a credit freeze matter more than usual. Enrolling does not give up your right to bring a claim.
Can I sue Diamond Chemical Co LLC over the data breach?
It depends on what was exposed, the law in Indiana 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.
Is there a Diamond Chemical Co 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 Diamond Chemical Co 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.
How much could a Diamond Chemical Co LLC data breach settlement or claim be worth?
There is no set amount, and no Diamond Chemical Co 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. The filing lists Full Name, Social Security Number, Date of Birth as involved. Keep receipts and records; they're what damages claims are built on.
Do I need a Diamond Chemical Co LLC data breach lawyer or attorney?
An attorney can read your notice and tell you whether a claim makes sense. A case review here is free, and data breach cases are usually handled on contingency, so there is no upfront cost.

Source: Indiana Attorney General filing

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