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Seyfarth Shaw LLP data breach investigation

Seyfarth Shaw LLP, a major law firm, reported a data security incident to Indiana authorities in September 2026, confirming unauthorized access to sensitive personal and legal information. This breach may expose affected individuals to significant risks, prompting an investigation into the firm's data protection practices and potential liabilities.

Filed
September 18, 2026
Regulator
Indiana AG
People affected
Not stated
File status
Monitoring

What the filing confirms

  • Seyfarth Shaw LLP reported the incident to the Indiana Attorney General.
  • Information involved: Full Name, Social Security Number, Date of Birth, Home Address, Driver's License Number, Financial Account Details, Wage and Compensation Information, Confidential Legal and Personnel Records.

Still unknown

  • How many people were affected. The filing does not give a number.
  • What caused the incident beyond the description in the filing.
  • How the attackers got in, and whether basic safeguards such as multi-factor sign-in were in place.
Read the filing at the source

Investigation notes

An official report filed with the Indiana Attorney General on September 18, 2026, confirms that Seyfarth Shaw LLP experienced a data security incident on or around August 18, 2026. This incident involved unauthorized access to the firm's systems, which routinely hold vast amounts of highly sensitive personal and proprietary information due to its legal practice.

The firm has indicated that the exposed data includes Full Name, Social Security Number, Date of Birth, Home Address, Driver's License Number, Financial Account Details, Wage and Compensation Information, and Confidential Legal and Personnel Records. Such a combination of personal identifiers and financial data creates a substantial risk of identity theft, financial fraud, and other serious harms for those affected. Recipients of a notification letter should carefully review its contents to understand the specific data categories involved.

Under Indiana law, organizations entrusted with personal information, like Seyfarth Shaw LLP, are required to implement reasonable security measures to protect that data. The occurrence of this breach suggests that unauthorized actors may have exploited vulnerabilities within the firm's data security framework. Our investigation will examine the specifics of how this intrusion occurred, how long unauthorized access was maintained, and whether appropriate safeguards were in place at the time of the incident.

If you have received a data breach notification letter from Seyfarth Shaw LLP, it signifies that your personal information was potentially compromised. This official acknowledgment provides a basis for understanding your legal rights and considering potential actions. The law recognizes the inherent risk and burden placed upon individuals whose data has been exposed due to security failures.

Our firm is actively investigating the Seyfarth Shaw LLP data breach to determine the full scope of harm and to assess the firm's compliance with data protection regulations. If your data was involved, you may have legal recourse. We offer a free, no-obligation case review to help you understand your options without any upfront costs.

What our attorneys examine

A cyberattack does not excuse a company from protecting the information it holds. We look at whether Seyfarth Shaw LLP used reasonable security, how long it kept the data, and how quickly it told the people affected. Those questions decide whether a class action or individual claim is possible. Read more on how ransomware lawsuits work, or browse other incident files in Indiana.

Seyfarth Shaw LLP data breach questions

How many people were affected by the Seyfarth Shaw LLP data breach, and what was exposed?
The filing does not give a count of affected people and lists the following information as involved: Full Name, Social Security Number, Date of Birth, Home Address, Driver's License Number, Financial Account Details, Wage and Compensation Information, Confidential Legal and Personnel Records. Your own letter is the best guide to what was exposed about you, since notices are usually tailored to each person.
Is the Seyfarth Shaw LLP data breach letter legit or a scam?
A notice from Seyfarth Shaw LLP in the mail matches the breach Seyfarth Shaw LLP reported to the Indiana Attorney General on September 18, 2026. Check that the company name and dates in your letter match that filing. A real notice of data security incident won't ask for your password, Social Security number or a payment — if it does, contact Seyfarth Shaw LLP through a phone number or website you find yourself.
Did Seyfarth Shaw LLP offer free credit monitoring?
Look for an enrollment code in your Seyfarth Shaw LLP notice. Companies that offer free credit monitoring after a breach usually include it there, with a deadline to activate. Because Social Security numbers are listed in this filing, identity monitoring and a credit freeze matter more than usual. Using the free service won't stop you from joining a lawsuit or settlement later.
Is there a Seyfarth Shaw LLP data breach class action lawsuit?
Law firms often open an investigation after a breach notice like this one, and a class action lawsuit may follow. This page doesn't confirm that a lawsuit has been filed against Seyfarth Shaw LLP. You usually don't have to join a class action to be included — if a settlement is reached, class members are notified and can file a claim.
What should I do after getting the Seyfarth Shaw LLP data breach notice?
Keep the letter and the envelope, and note the date it arrived. Freeze your credit with Equifax, Experian and TransUnion, change any passwords the notice mentions, and sign up for any free credit monitoring the letter offers. Then check whether you may have a claim.
Where can I see the official Seyfarth Shaw LLP breach notice?
Seyfarth Shaw LLP's report is published by the Indiana Attorney General: https://www.in.gov/attorneygeneral/consumer-protection-division/id-theft-prevention/security-breaches/#seyfarth-shaw-llp-2026 Compare it with the letter you received to confirm the dates and details match.
Do I need a Seyfarth Shaw LLP data breach lawyer or attorney?
An attorney can read your notice and tell you whether a claim makes sense. A case review here is free, and data breach cases are usually handled on contingency, so there is no upfront cost.
Can I sue Seyfarth Shaw LLP over the data breach?
It depends on what was exposed, the law in Indiana and your own state, and whether you've been harmed. Most people take part through a class action rather than suing alone. Keep your notification letter — it's the proof that connects you to the breach.
How much could a Seyfarth Shaw LLP data breach settlement or claim be worth?
There is no set amount, and no Seyfarth Shaw LLP settlement is confirmed here. In past data breach settlements, payments depended on what data was exposed and on documented losses — fraud, out-of-pocket costs and time spent dealing with the breach. The filing lists Full Name, Social Security Number, Date of Birth as involved. Keep receipts and records; they're what damages claims are built on.

Other open files in Indiana

Attorney advertising. An incident file reflects a public regulator filing and our review of it; it does not mean a lawsuit has been filed or that the company did anything unlawful. Submitting a review request does not create an attorney-client relationship.