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Cornerstone Staffing Solutions Inc data breach investigation

Cornerstone Staffing Solutions Inc. confirmed a data breach impacting individuals in Indiana, reporting the incident in September 2026. This breach exposed highly sensitive information, including Full Names, Social Security Numbers, and Direct Deposit Account Details, creating serious risks for identity theft and financial fraud for those affected.

Filed
September 11, 2026
Regulator
Indiana AG
People affected
Not stated
File status
Monitoring

What the filing confirms

  • Cornerstone Staffing Solutions Inc reported the incident to the Indiana Attorney General.
  • Information involved: Full Name, Social Security Number, Date of Birth, Wage and Compensation Information, Tax Return Information, Direct Deposit Account Details, Home Address, Phone Number, Employment History Records.

Still unknown

  • 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

Cornerstone Staffing Solutions Inc. formally reported a data security incident to the Indiana Attorney General in September 2026. This report indicated an unauthorized compromise of their network environment, which occurred on November 6, 2025. As a human resources and workforce management provider, Cornerstone Staffing Solutions Inc. handles extensive personal and financial data for job seekers and employees.

According to the official notification, the data reported exposed includes Full Name, Social Security Number, Date of Birth, Wage and Compensation Information, Tax Return Information, Direct Deposit Account Details, Home Address, Phone Number, and Employment History Records. The scope of this exposure highlights the sensitive nature of the information entrusted to the company.

The compromise of such detailed personal and financial information carries significant risks for those affected. The exposure of Social Security Numbers, coupled with Direct Deposit Account Details and Tax Return Information, could lead to serious consequences including identity theft, unauthorized financial transactions, or fraudulent tax filings.

Companies like Cornerstone Staffing Solutions Inc. are legally obligated to protect the sensitive personal data they collect and store. The occurrence of a breach on this scale suggests that existing cybersecurity measures may have been insufficient to prevent unauthorized access. Receiving a data breach notification letter from the company serves as a formal acknowledgment that your confidential records were compromised.

If you received a notification letter, it is crucial to take proactive steps. We advise reviewing all financial and credit statements for suspicious activity, placing a fraud alert or credit freeze with major credit bureaus, and considering changing any passwords associated with your employment accounts. These actions can help mitigate potential harm.

Our law firm is closely monitoring the situation involving Cornerstone Staffing Solutions Inc. and is investigating potential claims on behalf of individuals whose data was compromised. If you received a data breach notification, we encourage you to seek a free case review to understand your legal options and how this incident might affect you.

What our attorneys examine

A cyberattack does not excuse a company from protecting the information it holds. We look at whether Cornerstone Staffing Solutions 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 Indiana.

Cornerstone Staffing Solutions Inc data breach questions

How many people were affected by the Cornerstone Staffing Solutions 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, Wage and Compensation Information, Tax Return Information, Direct Deposit Account Details, Home Address, Phone Number, Employment History Records. Your own letter is the best guide to what was exposed about you, since notices are usually tailored to each person.
Is the Cornerstone Staffing Solutions Inc data breach letter legit or a scam?
A notice from Cornerstone Staffing Solutions Inc in the mail matches the breach Cornerstone Staffing Solutions Inc reported to the Indiana Attorney General on September 11, 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 Cornerstone Staffing Solutions Inc through a phone number or website you find yourself.
Did Cornerstone Staffing Solutions Inc offer free credit monitoring?
Any free monitoring Cornerstone Staffing Solutions Inc 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. Using the free service won't stop you from joining a lawsuit or settlement later.
Is there a Cornerstone Staffing Solutions 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 Cornerstone Staffing Solutions 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 Cornerstone Staffing Solutions 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 Cornerstone Staffing Solutions Inc breach notice?
Cornerstone Staffing Solutions Inc's report is published by the Indiana Attorney General: https://www.in.gov/attorneygeneral/consumer-protection-division/id-theft-prevention/security-breaches/#cornerstone-staffing-solutions-inc-2026 Compare it with the letter you received to confirm the dates and details match.
Do I need a Cornerstone Staffing Solutions 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 Cornerstone Staffing Solutions Inc 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.
How much could a Cornerstone Staffing Solutions Inc data breach settlement or claim be worth?
There is no set amount, and no Cornerstone Staffing Solutions 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.

Other open files in Indiana

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.