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Incident · State breach notice (California AG)

Plaza Home Mortgage data breach: 137,976 people after an employee's computer was accessed in February 2026

Compiled from public records. Updated 2026-11-09. By the cisonews.net Desk.

Plaza Home Mortgage reported a data breach affecting 137,976 people in total, the figure on Indiana's attorney general list, which counts 1,490 Indiana residents among them. The San Diego company says threat actors got into one employee's computer on or around February 17, 2026, and that an unauthorized party may have obtained some customers' personal information. The letter lists names, addresses, Social Security numbers, birth dates, driver's license or other government ID, and information from mortgage loan applications and servicing. Letters are dated May 19, 2026, and recipients are offered 12 months of credit monitoring from CyEx.

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How many people were affected by the Plaza Home Mortgage data breach?

137,976 in total, the number Plaza reported to Indiana. The letter gives no count. The state lists count their own residents:

RegulatorWho it countsNumberRecorded
Indiana attorney generalTotal reported by Plaza137,976Notice sent May 29, 2026
Texas attorney generalTexans12,610Posted June 9, 2026
Washington attorney generalWashington residents9,598Reported June 5, 2026
Massachusetts consumer affairs officeMassachusetts residents4,033Reported June 17, 2026
Indiana attorney generalIndiana residents1,490Notice sent May 29, 2026
California attorney generalNo count published—Recorded June 5, 2026

The ranking of 2026's largest breaches explains how Indiana's list counts totals and why the state figures differ.

What happened, and when?

Plaza says its security controls flagged the access at once and it acted immediately to shut the attack down, then removed the threat actor from its systems and investigated.

DateEvent
On or around February 17, 2026Unauthorized access to one employee's computer
May 19, 2026Date on the letters
May 29, 2026Notice sent, per Indiana
June 5, 2026Notice recorded by California and reported to Washington
June 9, 2026Notice posted by Texas
June 17, 2026Notice reported to Massachusetts

From the access to the date on the letters took 91 days, and to Indiana's notice date 101. The guide to notice delays compares this with the rest of the log.

What information was involved?

The letter says the information may have included name, address, Social Security number, birth date, driver's license or other government identification, and information related to mortgage loan applications and servicing. It adds that the information was not the same for each person. For its 9,598 residents, Washington's attorney general also lists usernames and passwords or security question answers. Massachusetts marks Social Security numbers and driver's license numbers as breached for its 4,033 residents. The guide to bank, brokerage and mortgage breach notices sets out what other lenders' letters say.

What is Plaza Home Mortgage offering?

ItemDetail from the letter
Service12 months of credit monitoring and identity theft services from CyEx ("Financial Shield Complete": one-bureau credit monitoring, financial transaction and home title monitoring, $1 million identity theft insurance)
EnrollmentWith the activation code and before the deadline printed on each letter
Help line844-953-3450, Monday to Friday 8 a.m. to 11 p.m. and Saturday 9 a.m. to 6 p.m., except holidays
AdviceMonitor financial accounts, place a fraud alert with one of the three credit bureaus, and check credit reports periodically

California's record also holds a second letter, for employees. The guide to credit monitoring offers compares offers like this one.

What the documents leave open

  • How the threat actors got into the employee's computer, and how long they had access.
  • Whether the 137,976 people are borrowers, applicants or others, and which data each had involved.
  • Why Washington lists account credentials when the letter does not.

California's breach-notice rule

California's breach law (Civil Code § 1798.82 for businesses, § 1798.29 for state agencies) requires any person or business that must notify more than 500 California residents of a single breach to submit one sample copy of that notice to the Attorney General electronically. The California Attorney General's breach list, where this notice was found, is built from those submissions. Source: California Department of Justice, Office of the Attorney General, Data Security Breach Reporting. The guide Data breach laws by state: notice deadlines and attorney general thresholds in 23 states reads the rule in full, and the glossary defines Breach notification law.

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Sources

  1. 2026-06-05 · APlaza Home Mortgage, notice letter filed with the California Attorney General, published June 5, 2026
  2. 2026-06-05 · ACalifornia Attorney General, data breach notification record, published June 5, 2026
  3. 2026-11-09 · AIndiana Attorney General, data breach year-to-date report (2026), published November 9, 2026
  4. 2026-11-09 · ATexas Attorney General, data security breach reports, published November 9, 2026
  5. 2026-11-09 · AWashington Attorney General, data breach notifications, published November 9, 2026
  6. 2026-11-09 · AMassachusetts Office of Consumer Affairs and Business Regulation, 2026 Data Breach Notification Report, published November 9, 2026
  7. undated · ACalifornia Department of Justice, Office of the Attorney General, Data Security Breach Reporting

Tier A: the organization itself (including notices it filed with a state attorney general), a regulator or SEC EDGAR. Tier B: established press. Each fact on this page carries its supporting passage in the page source.

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