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MonitoringIndiana AG filing · September 23, 2026

Man Group Data Breach Exposes Client Financial Information in Indiana

Man Group, a global investment firm, reported a data breach impacting client records to Indiana authorities in September 2026. The incident potentially exposed highly sensitive personal and financial details, including Social Security Numbers and investment portfolio records. Individuals are advised to review notification letters carefully and take protective measures to safeguard their financial identity.

State
Indiana
Breach date
March 28, 2026
Reported
September 23, 2026

What may have been exposed

  • Full Name
  • Social Security Number
  • Date of Birth
  • Financial Account Number
  • Routing Number
  • Tax Identification Number
  • Investment Portfolio Records
  • Home Address
  • Email Address

Man Group, an investment management firm, filed a data breach notice with Indiana regulators on September 23, 2026. The company indicated that a security incident on March 28, 2026, compromised sensitive client information, prompting the official notification.

The breach involved the exposure of several critical data categories. These include individuals' Full Name, Social Security Number, Date of Birth, Financial Account Number, Routing Number, Tax Identification Number, Investment Portfolio Records, Home Address, and Email Address.

Exposure of such a comprehensive range of personal and financial data carries significant risks. With details like Social Security Numbers and financial account information, affected individuals could face increased risks of identity theft, unauthorized account access, or financial fraud attempts.

While the specific nature of the breach remains unspecified in public filings, its potential impact on personal data security is substantial, given the type of information held by financial institutions.

Individuals who receive a breach notification from Man Group should take proactive steps. It is recommended to carefully review the notification letter for specific details and consider placing a fraud alert or credit freeze on credit reports. Regularly monitor financial account statements and credit reports for any suspicious activity and report unauthorized transactions immediately to financial institutions.

What to do if you were affected

Based on the categories of information reported in this filing, these steps can help limit the risk of identity theft and fraud.

  • Freeze your credit

    Place a free credit freeze with Equifax, Experian, and TransUnion. A freeze blocks new accounts from being opened in your name and can be lifted anytime.

  • Guard against tax fraud

    File your tax return as early as possible and consider requesting an IRS Identity Protection PIN so no one can file a fraudulent return in your name.

  • Watch your financial accounts

    Review bank and card statements for unfamiliar activity and turn on transaction alerts. Report anything you don't recognize to your bank right away.

  • Secure your online accounts

    Change the password on any account that reused an exposed password and turn on two-factor authentication wherever it's offered.

  • Stay alert to targeted scams

    Be cautious of calls, texts, or emails that reference this breach. Legitimate organizations won't ask you to confirm sensitive details through an unsolicited message.

  • Keep your notification letter

    Save the notice you received. It documents that your information was involved and is often needed to enroll in any credit monitoring offered or to join a related legal claim.

What to know about the Man Group data breach

How many people were affected by the Man Group 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, Financial Account Number, Routing Number, Tax Identification Number, Investment Portfolio Records, Home Address, Email Address. Your own letter is the best guide to what was exposed about you, since notices are usually tailored to each person.
Where can I see the official Man Group breach notice?
Man Group's report is published by the Indiana Attorney General: https://www.in.gov/attorneygeneral/consumer-protection-division/id-theft-prevention/security-breaches/#man-group-2026 Compare it with the letter you received to confirm the dates and details match.
What should I do after getting the Man Group 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.
Is the Man Group data breach letter legit or a scam?
A notice from Man Group in the mail matches the breach Man Group reported to the Indiana Attorney General on September 23, 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 Man Group through a phone number or website you find yourself.
Did Man Group offer free credit monitoring?
Look for an enrollment code in your Man Group 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. Signing up doesn't waive any legal rights you may have.
Can I sue Man Group 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.
Is there a Man Group 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 Man Group. 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.
How much could a Man Group data breach settlement or claim be worth?
There is no set amount, and no Man Group 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.
Do I need a Man Group 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.

Source: Indiana Attorney General filing

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Man Group Data Breach 2026: Filing Record