Cornerstone Staffing Solutions Data Breach Class Action Investigation

An unauthorized actor gained access to the network of Cornerstone Staffing Solutions and removed data belonging to job seekers and workers placed by the staffing agency. If you received a data breach notification letter from Cornerstone Staffing Solutions, our data breach lawyers want to hear from you.

What Happened?

According to a notice filed with the California AG Office, Cornerstone Staffing Solutions was hit by a data breach. The breach occurred on November 6, 2025. Information exposed in the breach reportedly included full names, mailing addresses, dates of birth, email addresses, phone numbers, and Social Security numbers. Affected individuals were notified by mail beginning in September 2026. The unauthorized access was detected on November 17, 2025, and the review of the affected data was not completed until August 2026.

If you are a employee who worked at Cornerstone Staffing Solutions, you may be entitled to compensation. Fill out the form below to see if you qualify.

Steps To Take If You Were Affected

1. Monitor your credit reports and financial accounts for suspicious activity
2. Consider placing a fraud alert or credit freeze with all three major credit bureaus
3. Be alert to phishing emails or calls referencing the breach
4. Change passwords on any affected accounts and enable two-factor authentication
5. Keep a copy of your data breach notification letter for your records