Madison Partners Data Breach Lawsuit Investigation
On November 26, 2025, commercial real-estate advisory firm Madison Partners disclosed a cyber-incident that compromised sensitive personal information of 361 individuals. If you received a data-breach letter, you may be entitled to compensation and proactive identity-protection resources.
Free Consultation: Use the form on this page to learn your rights and explore joining the Madison Partners data-breach lawsuit investigation.
Key Takeaways
- Breach discovered: September 12, 2025 (unauthorized access began September 11).
- Consumer notices mailed: November 26, 2025.
- Total individuals affected: 361 (Texas 360; Massachusetts 1).
- Exposed data: names, Social Security numbers, driver’s-license/state ID details, passports, dates of birth, addresses, financial and medical information.
- Identity-theft protection: 24-month IDX package with up to $1 million insurance.
Timeline of the Madison Partners Cyber-Incident
September 11, 2025: An unauthorized actor reportedly accessed and exfiltrated data from Madison Partners’ network.
September 12, 2025: Internal monitoring detected suspicious encryption activity. Madison Partners engaged leading cybersecurity experts, contained the threat, and notified law enforcement.
September 12 – November 2025: A forensic review determined which files contained personal information and which individuals must be notified.
November 26, 2025: Written notices were sent to impacted consumers.
December 2–4, 2025: Breach reports filed with the Texas and Massachusetts Attorneys General.
What Information Was Compromised?
According to state filings, the breach exposed one or more of the following data elements:
- Name
- Address
- Date of birth
- Social Security number
- Driver’s license or state ID number
- Passport number
- Credit/debit card or bank-account number
- Medical information
Actions Madison Partners Has Taken
Madison Partners LLC (“Madison Partners”) states it:
- Immediately contained and remediated the incident with cybersecurity specialists.
- Notified law-enforcement authorities.
- Enhanced system safeguards following expert recommendations.
- Offered complimentary identity-theft protection services through IDX, including 24-month credit monitoring, CyberScan internet monitoring, a $1 million insurance policy, and full identity-recovery assistance.
Steps You Can Take Now
- Enroll in the free IDX services before the deadline in your letter.
- Review bank, credit-card, and health-insurance statements for unauthorized activity.
- Obtain free annual credit reports and consider a fraud alert or security freeze.
- Retain a copy of your breach notification for future reference.
Company Overview
Founded in 1996, Madison Partners is a Los Angeles – based commercial real-estate investment brokerage.
- Website: madisonpartners.net
- Headquarters: 11777 San Vicente Blvd, Suite 500, Los Angeles, CA, USA
- Industry: Commercial Real Estate Advisory & Brokerage
- Year Founded: 1996
Frequently Asked Questions
I received a data breach letter from Madison Partners — what should I do?
Read the notice thoroughly, activate the free IDX protection, and monitor your accounts. Save the letter; you may need it to prove eligibility for any future settlement.
How do I submit a claim related to the Madison Partners data breach?
Complete our confidential form. An attorney will reach out to explain potential remedies and next steps in the Madison Partners lawsuit investigation.
Am I eligible to join a lawsuit against Madison Partners?
Anyone whose data was included in the 361-person exposure may qualify. Eligibility depends on data sensitivity, state laws, and demonstrated harm.
What information did the Madison Partners breach expose?
Names, addresses, dates of birth, Social Security numbers, driver’s-license or state ID numbers, passport numbers, bank-account or card numbers, and certain medical details.
Did Madison Partners offer credit monitoring, and for how long?
Yes. The firm is providing 24 months of complimentary IDX identity-theft and credit monitoring with a $1 million insurance guarantee.
How many people were affected by the Madison Partners breach?
A total of 361 individuals—360 in Texas and 1 in Massachusetts—according to state regulatory filings.
How can I get the official breach notice (PDF) for Madison Partners?
Click the navy-blue button above to download the PDF directly from the Massachusetts Attorney General’s website.