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Cornerstone Staffing Solutions, Inc. data breach investigation

Cornerstone Staffing Solutions, Inc. reported a data breach to Washington regulators on September 11, 2026, compromising highly sensitive personal and financial data. This incident raises questions about the company's security practices and could expose affected individuals to identity theft and financial fraud.

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

What the filing confirms

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

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., a prominent human resources and workforce management firm, confirmed a data security incident to the Washington Attorney General on September 11, 2026. This report indicates that an unauthorized party accessed the company's network, which stores extensive personal data due to its core business of connecting job seekers and employers.

The breach led to the exposure of a dangerous combination of sensitive personal information. Affected individuals' Full Name, Social Security Number, Date of Birth, Wage and Compensation Information, Tax Return Information, Direct Deposit Account Details, Mailing Address, and Phone Number were reportedly compromised. This specific data set is often targeted for various forms of financial crime and identity theft.

The compromise of such detailed personal and financial records creates significant, long-term risks for those affected. With Social Security Numbers and Direct Deposit Account Details exposed, individuals face an elevated threat of fraudulent accounts being opened, unauthorized financial transactions, and even tax fraud. Recipients of breach notifications should remain vigilant about suspicious activity.

Under Washington state law, companies handling sensitive consumer data, such as Cornerstone Staffing Solutions, Inc., are legally obligated to maintain reasonable security measures. The occurrence of this data breach suggests a potential failure in these safeguards, prompting an inquiry into whether the company met its duty to protect the personal information entrusted to it. This legal duty includes deploying robust cyber defenses and promptly addressing vulnerabilities.

If you received a data breach notification letter from Cornerstone Staffing Solutions, Inc., your personal data was part of this confirmed compromise. Such a notification establishes your standing to seek legal recourse. Our firm is currently reviewing this incident and invites individuals affected by the Cornerstone Staffing Solutions, Inc. data breach to contact us for a free, confidential case review. There are no out-of-pocket costs to you unless we successfully recover compensation on your behalf.

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 Washington.

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, Mailing Address, Phone Number. 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 Washington 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?
Check your letter from Cornerstone Staffing Solutions, 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. 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 Washington Attorney General: https://agportal-s3bucket.s3.amazonaws.com/databreach/BreachA42777.pdf 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 Washington 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 Washington

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.