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ONE Gas, Inc. data breach investigation

ONE Gas, Inc. reported a data security incident to Texas authorities, indicating that personal information was compromised. This event has triggered an investigation into the company's security practices and the timeline for notifying affected individuals.

Filed
March 30, 2026
Regulator
TX AG
People affected
Not stated
File status
Investigation Open

What the filing confirms

  • ONE Gas, Inc. reported the incident to the TX Attorney General.

Still unknown

  • Which categories of personal information were taken. The filing does not list them.
  • How many people were affected. The filing does not give a number.
  • What caused the incident beyond the description in the filing.
  • How the attackers got in, and whether basic safeguards such as multi-factor sign-in were in place.
Read the filing at the source

Investigation notes

ONE Gas, Inc., a natural gas distribution company, has filed notice with the Texas Attorney General's office regarding a data breach that occurred on or about August 1, 2025. The company reported this incident to state regulators on March 30, 2026, and the matter is currently under investigation to determine the full scope and impact.

The specific categories of personal information involved in this breach have not been detailed in the public filing. However, affected individuals have received notification that their data was exposed. This means an unauthorized party gained access to confidential information, raising immediate concerns about how such sensitive data was protected by ONE Gas.

The time elapsed between the breach occurrence in August 2025 and its reporting in March 2026 is a key aspect often scrutinized in data breach investigations. This period raises questions about the company’s detection capabilities and the promptness of its notification process to those potentially impacted by the exposure of their personal information.

If you have received a data breach notification from ONE Gas, it is prudent to remain vigilant. We generally advise monitoring your financial and online accounts for any unusual activity and being cautious of unsolicited communications that might attempt to phish for more of your personal details. Considering placing a fraud alert or credit freeze on your credit reports can also provide an additional layer of protection.

Understanding your legal options after a data breach can be complex. Consulting with an attorney can help clarify your rights and potential recourse against the company responsible for safeguarding your data. A free case review offers a no-obligation opportunity to discuss the specifics of your situation and explore whether legal action is appropriate.

What our attorneys examine

A cyberattack does not excuse a company from protecting the information it holds. We look at whether ONE Gas, Inc. used reasonable security, how long it kept the data, and how quickly it told the people affected. Those questions decide whether a class action or individual claim is possible. Read more on how ransomware lawsuits work, or browse other incident files in TX.

ONE Gas, Inc. data breach questions

Is the ONE Gas, Inc. data breach letter legit or a scam?
A notice from ONE Gas, Inc. in the mail matches the breach ONE Gas, Inc. reported to the TX Attorney General on March 30, 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 ONE Gas, Inc. through a phone number or website you find yourself.
Did ONE Gas, Inc. offer free credit monitoring?
Look for an enrollment code in your ONE Gas, Inc. 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.
Is there a ONE Gas, 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 ONE Gas, 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.
What should I do after getting the ONE Gas, 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.
Where can I see the official ONE Gas, Inc. breach notice?
ONE Gas, Inc.'s report is published by the TX Attorney General: https://oag.my.site.com/datasecuritybreachreport/apex/DataSecurityReportsPage#BR-0004943 Compare it with the letter you received to confirm the dates and details match.
Do I need a ONE Gas, 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.
Can I sue ONE Gas, Inc. over the data breach?
It depends on what was exposed, the law in TX 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.
How much could a ONE Gas, Inc. data breach settlement or claim be worth?
There is no set amount, and no ONE Gas, 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. Keep receipts and records; they're what damages claims are built on.

Other open files in TX

Attorney advertising. An incident file reflects a public regulator filing and our review of it; 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.