The Moinian Group Data Breach Lawsuit Investigation

Shamis & Gentile P.A., one of the nation's premier class action law firms specializing in data breach cases, is investigating the The Moinian Group data breach.

If you were affected by the data breach, your sensitive personally identifiable information may have been exposed, and you may be eligible for compensation.

About The Moinian Group

The Moinian Group is a privately held real estate investment company based in New York City. Founded in 1980, the company has developed, owned and operated a diverse portfolio spanning office, hotel, retail, condominium and rental apartment properties.

With more than 20 million square feet of assets, The Moinian Group has a significant presence in major cities including New York, Chicago, Dallas and Los Angeles. The company is known for its mixed-use and conversion projects, transforming office buildings into residential units and integrating luxury hotels into larger developments.

The firm also manages its own properties and has a lending arm to support its real estate activities.

What happened?

In September 2025, The Moinian Group experienced a major cyberattack. On Sept. 11, 2025, the ransomware group known as Abyss claimed responsibility for the attack and posted about it on the dark web. According to their statement, they obtained 4.7 terabytes of uncompressed data from The Moinian Group’s systems.

This incident is believed to be a ransomware attack, where hackers gain access to a company’s data and demand payment for its return or to prevent its release. These types of data breaches often compromise sensitive personal and financial data.

Possible Exposed Information

• Names
• Addresses
• Dates of birth
• Social Security numbers
• Contact details
• Financial records and account information
• Lease agreements
• Confidential business documents

Your Rights and Next Steps

If you believe you may have been affected by The Moinian Group data breach, it is important to take action. Data breaches can result in identity theft, financial fraud and other forms of harm.

Here are steps you can take to protect yourself:

• Communication and credit monitoring services: Review and save any notification letters you receive. Enroll in free credit monitoring and identity protection services, if offered.
• Monitor your accounts carefully: Check your financial statements regularly for suspicious activity or unauthorized transactions. If you notice anything unusual, contact your financial institution immediately.
• Fraud alert and credit reports: A fraud alert informs creditors to take extra steps to verify your identity before opening new accounts in your name. Consumers are also entitled to one free credit report annually from each credit bureau. You can request a fraud alert or a credit report by contacting any one of the three major credit bureaus.
• Seek legal help: Lawyers are ready to help you understand your rights and pursue compensation.

Lawyers are ready to help individuals whose information was compromised. Victims of data breaches may have legal rights, including the ability to seek compensation for damages such as lost time, emotional distress or out-of-pocket expenses related to identity theft or fraud.

You May Be Entitled to Compensation

If your information was exposed in The Moinian Group data breach, you may be eligible to join a class action lawsuit and seek compensation. Victims of data breaches may have legal rights, including the ability to seek damages for lost time, emotional distress or out-of-pocket expenses related to identity theft or fraud.

Lawyers are investigating this incident and are available to review your situation at no cost. To find out if you qualify, complete the form below.

Sources

• The Moinian Group
• Dark web