What is the Idaho National Laboratory data breach settlement?

A class action settlement resolving claims over a December 2023 targeted cyberattack on Idaho National Laboratory's computer systems. The attack accessed files containing personal information including names, Social Security numbers, dates of birth, and medical and health insurance information. The settlement offers cash payments, credit monitoring, and reimbursement for losses. The case is Dallimore v. Idaho National Laboratory operated by Battelle Energy Alliance, LLC, Case No. CV10-25-0742, in the District Court for Bonneville County, Idaho.

How much money can I get from the INL data breach settlement?

If your Social Security number was compromised, you can claim up to three cash payments: a flat $75 cash payment with no proof needed, up to $1,000 for documented out-of-pocket expenses (like credit monitoring fees, ID replacement costs, or postage), and up to $5,000 for documented losses from identity theft or fraud caused by the breach. All class members — regardless of whether their SSN was exposed — can claim 1 year of credit monitoring with $1 million in identity theft insurance.

Do I need to file a claim for the INL settlement?

Yes. Unlike some settlements, this one requires you to file a claim form to receive any benefits. If you do nothing, you get nothing. The fastest way to file is online at INLDataSettlement.com. You can also download and mail a claim form. The deadline is February 28, 2026.

Who qualifies for the Idaho National Laboratory settlement?

All individuals residing in the United States whose private information was compromised in the Idaho National Laboratory data incident disclosed on or about December 12, 2023. All class members can claim credit monitoring. However, only class members whose Social Security numbers were specifically compromised in the breach can claim the cash payments ($75 flat, up to $1,000 out-of-pocket, up to $5,000 extraordinary losses).

What is the deadline to file a claim for the INL settlement?

The claim deadline is February 28, 2026. You can file online at INLDataSettlement.com or mail a completed claim form postmarked by that date. The opt-out and objection deadline was January 29, 2026, which has already passed.

What happens if I do nothing in the INL settlement?

If you do nothing, you will receive no benefits or payments from this settlement, and you will give up your right to sue INL over the data breach. This is different from many data breach settlements where doing nothing still gets you something. In this case, you must file a claim to receive any benefit.

Idaho National Laboratory Data Breach Settlement: $75 Cash, Up to $5,000 for Losses, and 1 Year Credit Monitoring

Q: What is Idaho National Laboratory?

Idaho National Laboratory (INL) is one of the United States' premier nuclear research facilities. It is a Department of Energy national laboratory located in eastern Idaho, operated by Battelle Energy Alliance, LLC. INL conducts nuclear energy research, national security work, and other scientific programs. Because of the nature of this work, INL maintains extensive records on employees, contractors, researchers, and other individuals — which is why the breach potentially exposed sensitive personal data including Social Security numbers and medical information.

Q: What personal information was exposed in the INL data breach?

The files accessed in the December 2023 cyberattack may have contained full names, Social Security numbers, dates of birth, and medical treatment and health insurance information.

Q: What credit monitoring does the INL settlement offer?

One year of credit monitoring by all three credit bureaus, including real-time monitoring of your credit file, dark web scanning, comprehensive public records monitoring, access to a fraud resolution agent, and up to $1 million in identity theft insurance. This benefit is available to all class members, not just those whose SSNs were exposed.

By Steve Levine

Idaho National Laboratory INL Data Breach Class Action Settlement

Published: February 16, 2026

Cash Payment: $75 flat (no proof needed) + up to $1,000 out-of-pocket + up to $5,000 for identity theft losses

Credit Monitoring: 1 year, all 3 bureaus, with $1 million identity theft insurance

Claim Deadline: February 28, 2026

If your personal information was exposed in the December 2023 Idaho National Laboratory cyberattack, a class action settlement is offering cash payments and credit monitoring. The $75 flat cash payment requires no proof, and you can claim up to $5,000 more if you suffered identity theft or fraud because of the breach.

You must file a claim to get paid. If you do nothing, you get nothing. The deadline is February 28, 2026.

What Happened?

In December 2023, hackers launched a targeted cyberattack on the computer systems of Idaho National Laboratory (INL). The attackers gained unauthorized access and obtained files containing the personal information of individuals connected to the lab. The breach was publicly disclosed on or about December 12, 2023.

The compromised files may have contained full names, Social Security numbers, dates of birth, and medical treatment and health insurance information.

What Is Idaho National Laboratory?

Idaho National Laboratory is one of the United States' premier national laboratories, operated by Battelle Energy Alliance, LLC for the Department of Energy. Located in eastern Idaho, INL conducts nuclear energy research, national security programs, and other scientific work. Because of the nature of its operations, INL maintains detailed records on employees, contractors, researchers, and other people connected to the lab — which is why the breach potentially exposed sensitive personal information including Social Security numbers and medical data even for people who may not think of themselves as "customers" of INL in the traditional sense.

Who Qualifies?

You qualify if you are a U.S. resident whose private information was compromised in the December 2023 INL data incident. If you received a postcard or notice about this settlement, you are a confirmed class member.

There are two levels of benefits depending on whether your Social Security number was specifically compromised:

All class members (regardless of SSN status) can claim 1 year of credit monitoring.

Class members whose SSNs were compromised can also claim cash payments. If you received a postcard about this settlement, it should indicate whether your SSN was included. If you're not sure, contact the settlement administrator.

What Can You Get?

$75 Flat Cash Payment (no proof needed). If your SSN was compromised, you can claim a flat $75 payment with no documentation required. Just file the claim form.

Up to $1,000 for Out-of-Pocket Expenses. If you spent money dealing with the breach, you can claim up to $1,000 for documented expenses like credit monitoring fees, credit report fees, credit freeze and unfreeze costs, ID replacement costs, and postage for contacting banks by mail. You need receipts or other proof showing the expenses were related to the breach. Expenses must have occurred between December 12, 2023 and February 28, 2026. You cannot claim expenses already reimbursed by a third party. Personal notes alone are not enough — they can support other proof but can't be the only documentation.

Up to $5,000 for Identity Theft or Fraud Losses. If you lost money because of identity theft or fraud that was probably caused by the breach, you can claim up to $5,000. You need to show that the losses were likely connected to the data incident, that they aren't already covered by your out-of-pocket expenses claim, and that you tried to prevent the loss or recover the money (including using any insurance you already had). Losses must have occurred between December 12, 2023 and February 28, 2026. Same documentation rules apply — receipts and proof required, personal notes alone are not sufficient.

1 Year of Credit Monitoring (all class members). Regardless of whether your SSN was compromised, all class members can enroll in one year of credit monitoring by all three credit bureaus. This includes real-time credit file monitoring, dark web scanning, comprehensive public records monitoring, access to a fraud resolution agent, and up to $1 million in identity theft insurance.

You Must File a Claim

This is important: unlike many data breach settlements, doing nothing here gets you nothing. You must submit a claim form to receive any benefits — including the $75 flat payment and the credit monitoring.

The fastest way to file is online at INLDataSettlement.com. You can also download a printable claim form from the website and mail it. The deadline is February 28, 2026 (online submission or postmark date).

File Your Claim

Important Dates

• Data Incident: December 2023 (disclosed December 12, 2023)
• Eligible Expense Period: December 12, 2023 – February 28, 2026
• Opt-Out/Objection Deadline: January 29, 2026 (passed)
• Claim Deadline: February 28, 2026
• Final Approval Hearing: March 19, 2026 at 9:00 AM MT — Bonneville County Courthouse (via Zoom)

Attorneys' Fees

Class Counsel will request $175,000 in attorneys' fees and litigation costs. A service award of $5,000 is being requested for class representative Jason Dallimore. Both amounts are paid by INL and do not come from a settlement fund that would otherwise go to class members.

What Happens If I Do Nothing?

If you do nothing, you receive no benefits and no payments. You also give up the right to sue INL over the data breach. This is different from many settlements where doing nothing still gets you an automatic payment. Here, you must file a claim.

How to File Your Claim

File online at INLDataSettlement.com (fastest option). Or download and mail a claim form to the Settlement Administrator. Deadline: February 28, 2026.

How Do I Find Class Action Settlements?

Find all the latest class actions you can qualify for by getting notified of new lawsuits as soon as they are open to claims:

Case Information

The case is Dallimore v. Idaho National Laboratory operated by Battelle Energy Alliance, LLC, Case No. CV10-25-0742, in the District Court for Bonneville County, Idaho.

Defendant: Idaho National Laboratory, operated by Battelle Energy Alliance, LLC.

Class Representative: Jason Dallimore.

Class Counsel: Phillip J. Krzeski of Chestnut Cambronne PA and Wyatt Johnson of Johnson May.

Settlement Administrator: INL Data Incident Settlement, c/o Settlement Administrator, P.O. Box 25226, Santa Ana, CA 92799-9958. Email: info@INLDataSettlement.com.

Settlement Website: INLDataSettlement.com

Settlement Notice

Sources

• Class Action Settlement Notice, Dallimore v. Idaho National Laboratory operated by Battelle Energy Alliance, LLC, Case No. CV10-25-0742 (District Court, Bonneville County, Idaho)
• Settlement Website: INLDataSettlement.com

Filing Class Action Settlement Claims

Please submit only truthful information when filing your claim. If you are unsure whether you qualify, contact Class Counsel or the Settlement Administrator. OpenClassActions.com is a consumer news site and is not the settlement administrator or a law firm.

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Class Action Summary
Status	Pending Final Approval — Claim Form Required
Claim Deadline	February 28, 2026
Flat Cash Payment	$75 (no proof needed — SSN class members only)
Out-of-Pocket Expenses	Up to $1,000 (documented, SSN class members only)
Identity Theft Losses	Up to $5,000 (documented, SSN class members only)
Credit Monitoring	1 year, 3 bureaus, $1M insurance (all class members)
Category	Data Breach / Nuclear Research Lab / Cyberattack
Defendant	Idaho National Laboratory (Battelle Energy Alliance, LLC)
Data Exposed	Names, SSNs, DOB, medical treatment & health insurance info
Data Incident	December 2023 (disclosed December 12, 2023)
Expense Period	December 12, 2023 – February 28, 2026
Case Number	CV10-25-0742
Court	District Court, Bonneville County, Idaho
Opt-Out/Objection Deadline	January 29, 2026 (passed)
Final Approval Hearing	March 19, 2026 at 9:00 AM MT (via Zoom)
Attorneys' Fees	$175,000 (paid by INL) + $5,000 service award
Settlement Website	INLDataSettlement.com