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Sullivan Environmental Services, Inc. data breach investigation

Sullivan Environmental Services, Inc. reported a cybersecurity incident to the Texas Attorney General in August 2026, confirming that personal information was compromised. This disclosure initiates an investigation into the company's data security practices and the potential impact on those whose data was exposed.

Filed
August 4, 2026
Regulator
Texas AG
People affected
Not stated
File status
Investigation Open

What the filing confirms

  • Sullivan Environmental Services, Inc. reported the incident to the Texas 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.

Investigation notes

Sullivan Environmental Services, Inc., a consulting firm based in Texas, disclosed a data security incident to the state's Attorney General in August 2026. This notification confirmed that a cybersecurity event impacted its internal network, leading to the compromise of personal information. The breach itself occurred nearly a year prior, on September 4, 2025.

While the specific categories of information involved have not been detailed, the filing indicates that personal information maintained by Sullivan Environmental Services, Inc. was accessed without authorization. Given the company's operations involving extensive project and personnel records, the compromised data could carry significant implications for those affected. Our investigation will examine precisely what information was exposed and the company's obligations.

For individuals whose data was compromised, this incident creates an elevated risk of various forms of identity fraud and financial harm. Bad actors can misuse exposed personal information in numerous ways, from opening unauthorized accounts to attempting phishing scams. It is crucial for recipients of a breach notification to understand these potential consequences.

Under Texas law, companies handling sensitive personal data are obligated to implement reasonable security measures to protect that information. The nearly year-long gap between the breach date of September 4, 2025, and the filing date of August 4, 2026, also raises questions about the timeliness of the notification. Our firm is assessing whether Sullivan Environmental Services, Inc. upheld its duty to safeguard your data and provide prompt notice.

If you received a notification letter from Sullivan Environmental Services, Inc., we advise you to review it carefully for any specific details about the breach. Monitor your financial accounts and credit reports for suspicious activity. Consider placing a fraud alert or credit freeze to prevent unauthorized new accounts from being opened in your name.

Receiving a data breach notification suggests your personal information was inadequately protected. If you are among those affected by the Sullivan Environmental Services, Inc. incident, you may have legal recourse. Our firm offers a no-cost case review to help you understand your rights and explore potential claims. There are no upfront fees, and you only pay if we secure compensation for you.

What our attorneys examine

A cyberattack does not excuse a company from protecting the information it holds. We look at whether Sullivan Environmental Services, 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 Texas.

Sullivan Environmental Services, Inc. data breach questions

Is the Sullivan Environmental Services, Inc. data breach letter legit or a scam?
A notice from Sullivan Environmental Services, Inc. in the mail matches the breach Sullivan Environmental Services, Inc. reported to the Texas Attorney General on August 4, 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 Sullivan Environmental Services, Inc. through a phone number or website you find yourself.
Did Sullivan Environmental Services, Inc. offer free credit monitoring?
Check your letter from Sullivan Environmental Services, Inc.. If free credit or identity monitoring is offered, the enrollment code and deadline are printed in the notice itself. Using the free service won't stop you from joining a lawsuit or settlement later.
Is there a Sullivan Environmental Services, 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 Sullivan Environmental Services, 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 Sullivan Environmental Services, 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.
Do I need a Sullivan Environmental Services, 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 Sullivan Environmental Services, Inc. over the data breach?
It depends on what was exposed, the law in Texas 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 Sullivan Environmental Services, Inc. data breach settlement or claim be worth?
There is no set amount, and no Sullivan Environmental Services, 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 Texas

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.