DataBreachInformation.com
MonitoringMontanaFiled December 12, 2025

Understanding your Onset Financial, Inc. data breach notification letter

If a Onset Financial, Inc. letter arrived in your mailbox, here is what it means, why you received it, and the free steps you can take right now.

Why you received this letter

Onset Financial, Inc., a commercial equipment leasing company, reported a data breach to Montana authorities on December 12, 2025. The incident, which occurred on May 2, 2025, exposed a range of sensitive personal and financial data. Individuals affected by this breach should take immediate steps to monitor their accounts and credit to protect against potential fraud and identity theft.

Information the filing reports as involved

  • Full Name
  • Social Security Number
  • Date of Birth
  • Financial Account Number
  • Routing Number
  • Tax Return Information
  • Credit Score Information
  • Mailing Address

What to know about the Onset Financial, Inc. data breach

How many people were affected by the Onset Financial, Inc. 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, Financial Account Number, Routing Number, Tax Return Information, Credit Score Information, Mailing Address. 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 Onset Financial, Inc. breach notice?
Onset Financial, Inc.'s report is published by the Montana Attorney General: https://dojmt.gov/office-of-consumer-protection/reported-data-breaches/#mt-onset-financial-inc-2025 Compare it with the letter you received to confirm the dates and details match.
What should I do after getting the Onset Financial, Inc. 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 Onset Financial, Inc. data breach letter legit or a scam?
A notice from Onset Financial, Inc. in the mail matches the breach Onset Financial, Inc. reported to the Montana Attorney General on December 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 Onset Financial, Inc. through a phone number or website you find yourself.
Did Onset Financial, Inc. offer free credit monitoring?
Check your letter from Onset Financial, Inc.. If free credit or identity monitoring is offered, the enrollment code and deadline are printed in the notice itself. Because Social Security numbers are listed in this filing, identity monitoring and a credit freeze matter more than usual. Signing up doesn't waive any legal rights you may have.
Can I sue Onset Financial, Inc. over the data breach?
It depends on what was exposed, the law in Montana 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 Onset Financial, Inc. 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 Onset Financial, Inc.. 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 Onset Financial, Inc. data breach settlement or claim be worth?
There is no set amount, and no Onset Financial, Inc. 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 Onset Financial, Inc. 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.

What to do after the letter

  1. Confirm the notice is genuine

    A legitimate Onset Financial, Inc. notice references the specific incident reported to the Montana Attorney General and describes which categories of your information were involved. Compare the letter against the public filing before acting on any links or phone numbers it contains.

  2. Keep the letter — it is your proof of connection

    The notification letter is the document that ties your personal information to this incident. Keep the original and photograph it. If you later request a case review, this letter is the strongest evidence that you were among the affected individuals.

  3. Protect your accounts and credit

    Depending on what was exposed, consider a free credit freeze with all three bureaus, new passwords for reused credentials, and monitoring of financial statements. These steps are free and do not require you to wait for anyone's permission.

  4. Check the record against the public filing

    You can verify the Onset Financial, Inc. incident against the filing reported to the Montana Attorney General. This registry summarizes what was filed; it does not provide legal advice.

This page summarizes a data breach reported to the Montana Attorney General for informational purposes. DataBreachInformation.com is a neutral reference registry and does not provide legal advice.