Case file: Ampex Data Systems Corporation
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
- Mar 21, 2026
- Discovered
- Mar 21, 2026, as stated in the California letter
- State and federal records
- 2 filings, May 19, 2026 to May 27, 2026
- Residents counted
- 6 in 1 state (MA), latest filing per state
- Everyone affected
- No filing gives a total
- Information exposed
- Social Security number, Driver's license / state ID, Financial / bank account, Date of birth, Email address, Postal address
- Offered to those affected
- 12 months of credit or identity monitoring through Experian
- Third party named
- No
- Days to notice
- Past the statutory period in California, counted from discovery to the state's first record
The letter: "On March 21, 2026, we learned that a threat actor group had accessed and encrypted the network at one of our office locations."
Filings
| Agency | Record date | People | In total | Days to notice | Links |
|---|---|---|---|---|---|
| California California AG | May 27, 2026 | Not published | 67 days, statute 30 days, over | Letter Record | |
| Massachusetts Massachusetts OCABR | May 19, 2026 | 6 | 59 days, statute no fixed period | 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
- 67 days from discovery (Mar 21, 2026) to the California record (May 27, 2026). Statute: 30 days from discovery or notification of the breach (Cal. Civ. Code § 1798.82).
- 59 days from discovery (Mar 21, 2026) to the Massachusetts record (May 19, 2026). Statute: no fixed period from knowledge or reason to know of the breach (Mass. Gen. Laws ch. 93H, § 3).
The statutes
- 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).
- 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.
Sources and method
Records as published by California AG, Massachusetts OCABR. 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.