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Seyfarth Shaw LLP Data Breach (September 2026): What Was Exposed and What To Do

Last updated Oct 20, 2026 · Based on 2 official filings · See sources

According to the notice filed with the California Attorney General on Sep 18, 2026, Seyfarth Shaw LLP reported a data breach. It was also reported to the Texas Attorney General. People affected: 56,755 people (official total in the Texas Attorney General filing, filed Sep 21, 2026).

Key facts

From 2 official filings
Organization
Seyfarth Shaw LLP
Source: California Attorney General, filed Sep 18, 2026
People affected
56,755
Official total in the Texas Attorney General filing, filed Sep 21, 2026
Source: Texas Attorney General, filed Sep 21, 2026
Notice dates
Letters dated Sep 18, 2026
Source: notice letter in the California Attorney General filing of Sep 18, 2026
First filed Sep 18, 2026; latest filing Sep 21, 2026
Information exposed
  • Social Security number
  • Name
Sources: California AG, Sep 18, 2026; Texas AG, Sep 21, 2026
Filed with
Free credit monitoring
Offered: 24 months through Cyberscout
Source: notice letter in the California Attorney General filing of Sep 18, 2026

What to do now

Steps chosen from the information listed in the official filings. Your own letter may list more.

  1. Seyfarth Shaw LLP offered free credit monitoring for 24 months through Cyberscout. Use the enrollment code printed in your letter. Never share that code with anyone who contacts you.

    Source: notice letter in the California Attorney General filing of Sep 18, 2026

  2. A credit freeze stops new credit accounts being opened in your name. It is free by law and you can lift it when you need credit: Equifax, Experian and TransUnion.

  3. An IP PIN stops someone else filing a tax return with your Social Security number. Get one from the IRS at irs.gov.

  4. Scammers often contact people after a breach, pretending to be the organization, a bank or a government agency. Do not give your Social Security number, passwords or codes to anyone who contacts you first.

  5. You can get free credit reports from all three bureaus at AnnualCreditReport.com, the official site.

  6. The Federal Trade Commission's IdentityTheft.gov gives you a personal recovery plan.

Is the letter real?

The agency published an official copy of the notice. Compare your letter with it:

The notice letter filed with the California Attorney General on Sep 18, 2026 lists this phone number for questions: 1-833-516-6266. If the number in your letter is different, call the number in the official copy instead.

Source: notice letter in the California Attorney General filing of Sep 18, 2026

Never give your Social Security number, bank details or passwords to someone who contacts you first.

Timeline

  1. Incident began (earliest date reported) source
  2. Organization discovered the incident source
  3. Notice letters dated source
  4. Reported to California AG source
  5. Reported to Texas AG source

Sources

  1. California Attorney General Notice filed Sep 18, 2026
    Filed as “Seyfarth Shaw LLP” · Official copy of the letter
  2. Texas Attorney General Notice filed Sep 21, 2026
    Filed as “Seyfarth Shaw LLP” · 305 Texas residents · total 56,755
    The link opens the agency's list; search it for the organization name.

Last updated Oct 20, 2026. Our summaries are written in our own words from the official filings above. Spotted an error? Report a correction.