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MonitoringWashington AG filing · September 11, 2026

Cornerstone Staffing Solutions Reports Extensive Data Breach

Cornerstone Staffing Solutions, Inc. reported an unauthorized data compromise to Washington regulators on September 11, 2026. The incident exposed sensitive personal and financial details, including Full Name, Social Security Number, and Direct Deposit Account Details, creating significant identity theft and financial fraud risks for affected individuals.

State
Washington
Reported
September 11, 2026

What may have been exposed

  • Full Name
  • Social Security Number
  • Date of Birth
  • Wage and Compensation Information
  • Tax Return Information
  • Direct Deposit Account Details
  • Mailing Address
  • Phone Number

Cornerstone Staffing Solutions, Inc. operates as a key human resources and workforce management enterprise, handling extensive personal and financial data to connect job seekers with employers. The company confirmed a cybersecurity incident involving an unauthorized compromise of its network infrastructure, reporting it to Washington regulators on September 11, 2026.

Such incidents impacting staffing agencies often involve sophisticated cyberattacks, like unauthorized network intrusions, which target centralized databases containing active and legacy personnel files. These attacks aim to exploit vulnerabilities to gain access to sensitive systems.

The exposed data included Full Name, Social Security Number, Date of Birth, Wage and Compensation Information, Tax Return Information, Direct Deposit Account Details, Mailing Address, and Phone Number. This specific combination of personal and financial data presents a significant risk for identity theft, fraud, and potential financial harm.

The presence of Social Security Numbers and Dates of Birth can enable bad actors to open fraudulent credit lines or commit tax fraud. Additionally, compromised Direct Deposit Account Details and Wage and Compensation Information directly threaten immediate financial security and could lead to unauthorized transactions.

Individuals who receive a data breach notification from Cornerstone Staffing Solutions, Inc. should immediately review their financial statements, credit reports, and tax documents for any unusual activity. It is highly recommended to place a fraud alert or credit freeze with the major credit bureaus (Equifax, Experian, and TransUnion) to help prevent new accounts from being opened fraudulently.

Staying vigilant and continuously monitoring all personal and financial accounts for any suspicious transactions or communications is a crucial step following a data compromise of this nature.

What to do if you were affected

Based on the categories of information reported in this filing, these steps can help limit the risk of identity theft and fraud.

  • Freeze your credit

    Place a free credit freeze with Equifax, Experian, and TransUnion. A freeze blocks new accounts from being opened in your name and can be lifted anytime.

  • Guard against tax fraud

    File your tax return as early as possible and consider requesting an IRS Identity Protection PIN so no one can file a fraudulent return in your name.

  • Watch your financial accounts

    Review bank and card statements for unfamiliar activity and turn on transaction alerts. Report anything you don't recognize to your bank right away.

  • Stay alert to targeted scams

    Be cautious of calls, texts, or emails that reference this breach. Legitimate organizations won't ask you to confirm sensitive details through an unsolicited message.

  • Keep your notification letter

    Save the notice you received. It documents that your information was involved and is often needed to enroll in any credit monitoring offered or to join a related legal claim.

Cornerstone Staffing Solutions, Inc. breach filing: questions and answers

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.
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 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.
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.
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.
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.
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.
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.

Source: Washington Attorney General filing

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