MAN GROUP DATA BREACH: Edelson Lechtzin LLP Launches Investigation Into Exposure of Social Security Numbers

National class action firm Edelson Lechtzin LLP is offering free case evaluations to individuals affected by the Man Group data breach, which may have exposed names and Social Security numbers

NEWTOWN, Pa., Sept. 29, 2026 (GLOBE NEWSWIRE) -- Edelson Lechtzin LLP, a national class action law firm, is investigating data privacy claims arising from the Man Group data breach. Man Group is a global alternative investment management business that provides investment funds and strategies for institutional and private investors. The breach was disclosed through a notification filed with the Massachusetts Office of Consumer Affairs and Business Regulation, and affected individuals have begun receiving notice.

Key Facts at a Glance

• Company: Man Group — a global alternative investment management business serving institutional and private investors.
• How disclosed: The breach was disclosed through a notification filed with the Massachusetts Office of Consumer Affairs and Business Regulation. Ernst & Young LLP (EY) issued notices to affected individuals on behalf of Man Group and its affiliates.
• People affected: At least 19 Massachusetts residents, with additional individuals potentially affected nationwide.
• Information exposed: Names, Social Security numbers, and other sensitive personal information.
  
  

What Happened

EY, which provides professional tax services to financial institutions, received personal information relating to individuals’ investment holdings with Man Group and its affiliates. After discovering the incident, EY secured its systems, launched an investigation with third-party specialists, and notified federal law enforcement. The breach was reported to the Massachusetts Office of Consumer Affairs and Business Regulation, which identified at least 19 affected Massachusetts residents, with additional individuals potentially affected nationwide.

What Information Was Exposed

The compromised data may include names, Social Security numbers, and other sensitive personal information. Because Social Security numbers are highly sensitive, affected individuals face a lasting risk of identity theft, fraudulent account creation, tax fraud, and targeted phishing.

Your Legal Options

Edelson Lechtzin LLP is investigating a potential class action to pursue legal remedies on behalf of individuals whose sensitive personal data may have been compromised. The firm is examining whether Man Group implemented reasonable cybersecurity safeguards and whether additional measures could have prevented or reduced the breach’s impact. The firm will evaluate your rights and potential claims at no cost.

Recommended Protective Steps

• Preserve your breach notification letter and any reference or engagement numbers it contains.
• Monitor your account statements and credit reports for unauthorized activity.
• Consider placing a fraud alert or security freeze with Equifax, Experian, and TransUnion.
• Be cautious of phishing messages referencing the breach or your investment accounts.
• Remember your rights under the federal Fair Credit Reporting Act, including a free credit report and the right to dispute inaccurate information.
  
  

Contact Us for a Free Case Evaluation

Speak confidentially with a data privacy attorney today: Marc Edelson, Esq., Edelson Lechtzin LLP, 411 S. State Street, Suite N-300, Newtown, PA 18940; Phone: 844-696-7492; Email: medelson@edelson-law.com; Web: www.edelson-law.com. To request a free consultation click HERE.

About Edelson Lechtzin LLP

Edelson Lechtzin LLP is a national class action law firm with offices in Pennsylvania and California. In addition to data breach litigation, the firm handles class and collective actions involving securities and investment fraud, federal antitrust violations, ERISA employee benefit plans, wage theft, and consumer fraud.

Legal Notice: This press release may be considered Attorney Advertising in some jurisdictions.