Sequoia One Data Breach Investigation

Turke & Strauss LLP, a leading data breach law firm, is investigating Sequoia One PEO, LLC regarding its recent data breach. The Sequoia One data breach involved sensitive personal identifiable information and protected health information belonging to an undetermined number of individuals.


Sequoia One is a third-party human resources and payroll company. As a PEO, Sequoia One handles all human resource tasks that businesses wish to outsource. Accordingly, Sequoia One is capable of administering and offering premium benefits and 401ks, payroll and tax support, human resource compliance services, risk management, and consulting expertise. Founded in 2001, Sequoia One has rapidly expanded to include over 800 clients. Headquartered in San Francisco, California, Sequoia One employs more than 1,000 individuals.


Recently, Sequoia One discovered that it had experienced a data breach in which the sensitive personal identifiable information and protected health information in its systems may have been accessed. Through its investigation, Sequoia One determined that an unauthorized actor may have accessed this sensitive information between September 22 and October 6, 2022. On December 7, 2022, Sequoia One began notifying individuals whose information may have been impacted. The type of information exposed includes:

  • Name
  • Social Security number
  • Date of birth
  • Contact information (e.g., address, work email address)
  • Gender
  • Employment status
  • Marital status
  • Financial information (e.g., wage data related to benefits)
  • Medical information (e.g., Covid-19 status, vaccine status)

If you received a breach notification letter from Sequoia One:

We would like to speak with you about your rights and potential legal remedies in response to this data breach. Please fill out the form, below, or contact us at (608) 237-1775 or

If you were impacted by the Sequoia One data breach, you may consider taking the following steps to protect your personal information.

  1. Carefully review the breach notice and retain a copy;
  2. Enroll in the free credit monitoring service provided by Sequoia One PEO, LLC;
  3. Change passwords and security questions for online accounts;
  4. Regularly review account statements for signs of fraud or unauthorized activity;
  5. Monitor credit reports for signs of identity theft; and
  6. Contact a credit bureau(s) to request a temporary fraud alert.

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