Case file: Cornerstone Staffing Solutions, Inc.
Every government filing on this incident, the dates as stated, and the days to notice against each state's statute. Built from the records on Nov 9, 2026, agency link on every row. Not legal advice.
The incident
- Breach window
- Nov 6, 2025 to Nov 21, 2025
- Discovered
- Nov 17, 2025, as stated in the Iowa letter
- State and federal records
- 6 filings, Sep 11, 2026 to Sep 15, 2026
- Residents counted
- 5,349 in 3 states (TX, MA, WA), latest filing per state
- Everyone affected
- 366,122, as reported to Texas AG on Sep 15, 2026
- Information exposed
- Social Security number, Driver's license / state ID, Passport number, Financial / bank account, Medical / health information, Health insurance, Date of birth, Postal address, Usernames / passwords, Military ID
- Offered to those affected
- 12 months of credit or identity monitoring through Experian
- Third party named
- Yes, the letter attributes the incident to a vendor or service provider
- Days to notice
- Past the statutory period in all 4 states that set one, counted from discovery to each state's first record
The letter: "On or about November 17, 2025, Cornerstone detected anomalous activity indicative of a potential data security incident wherein an unauthorized actor may have gained access to certain of the company's systems."
Filings
| Agency | Record date | People | In total | Days to notice | Links |
|---|---|---|---|---|---|
| Texas Texas AG | Sep 15, 2026 | 4,425 | 366,122 | 302 days, statute 60 days, over | Record |
| Massachusetts Massachusetts OCABR | Sep 12, 2026 | 243 | 299 days, statute no fixed period | Record | |
| Oregon Oregon DOJ | Sep 11, 2026 | 366,122 (total) | 298 days, statute 45 days, over | Record | |
| California California AG | Sep 11, 2026 | Not published | 298 days, statute 30 days, over | Letter Record | |
| Iowa Iowa AG | Sep 11, 2026 | Not published | 298 days, statute no fixed period | Letter Record | |
| Washington Washington AG | Sep 11, 2026 | 681 | 298 days, statute 30 days, over | Letter Record |
People is the count the filing gives, residents of the state unless marked total. Days to notice runs from the discovery date the letter states, or from the end of the breach window when no letter states one, to the date on the state's first record of the incident. "Over" marks a count past the days the state's statute allows for notice to residents. The statute's trigger is a question of fact, the days are arithmetic.
Notice timing, state by state
- 302 days from discovery (Nov 17, 2025) to the Texas record (Sep 15, 2026). Statute: 60 days from determination that the breach occurred (Tex. Bus. & Com. Code § 521.053).
- 299 days from discovery (Nov 17, 2025) to the Massachusetts record (Sep 12, 2026). Statute: no fixed period from knowledge or reason to know of the breach (Mass. Gen. Laws ch. 93H, § 3).
- 298 days from discovery (Nov 17, 2025) to the Oregon record (Sep 11, 2026). Statute: 45 days from discovery or notification of the breach (ORS 646A.604).
- 298 days from discovery (Nov 17, 2025) to the California record (Sep 11, 2026). Statute: 30 days from discovery or notification of the breach (Cal. Civ. Code § 1798.82).
- 298 days from discovery (Nov 17, 2025) to the Iowa record (Sep 11, 2026). Statute: no fixed period from discovery of the breach (Iowa Code § 715C.2).
- 298 days from discovery (Nov 17, 2025) to the Washington record (Sep 11, 2026). Statute: 30 days from discovery of the breach (RCW 19.255.010).
The statutes
- Texas: 60 days to notify residents from determination that the breach occurred, Tex. Bus. & Com. Code § 521.053. Attorney General within 30 days of determination when 250 or more Texas residents are affected.
- Massachusetts: no fixed period to notify residents from knowledge or reason to know of the breach, Mass. Gen. Laws ch. 93H, § 3. Attorney General and OCABR as soon as practicable and without unreasonable delay, every breach.
- Oregon: 45 days to notify residents from discovery or notification of the breach, ORS 646A.604. Attorney General when more than 250 Oregon residents are affected, with the consumer notice.
- California: 30 days to notify residents from discovery or notification of the breach, Cal. Civ. Code § 1798.82. Sample notice to the Attorney General when more than 500 Californians are notified, within 15 days of the consumer notice (effective 2026).
- Iowa: no fixed period to notify residents from discovery of the breach, Iowa Code § 715C.2. Attorney General within 5 business days of the consumer notice when more than 500 Iowa residents are affected.
- Washington: 30 days to notify residents from discovery of the breach, RCW 19.255.010. Attorney General within 30 days of discovery when more than 500 Washington residents are affected.
Sources and method
Records as published by Texas AG, Massachusetts OCABR, Oregon DOJ, California AG, Iowa AG, Washington AG. Letter facts (discovery date, monitoring, third party) are read from the consumer letter the agency posted, 1 letter read for this incident, and quoted so you can check them. Texas and HHS publish no letters. First-seen times on each record page. Spot an error? Email support@breachtally.com with this page link.