Coldwell Banker D’Ann Harper, REALTORS Listed by medusa Ransomware Group

On March 16, 2025, the Medusa ransomware group added Coldwell Banker D’Ann Harper, REALTORS to its leak site and published 133.30 GB of the Texas real estate brokerage’s internal files after the company did not meet the attackers’ demands.

What Public Reporting Shows

Public reporting indicates that Medusa exfiltrated internal documents from the San Antonio-based firm, which operates multiple offices across Central and South Texas and employs more than 550 sales agents. The corporate headquarters sits at 18756 Stone Oak Pkwy Ste 102, San Antonio, Texas, 78258. Available reporting describes the exposed material as internal files; the precise mix of customer records, contracts, employee information, or financial data has not been independently verified by third parties. The total volume released so far stands at 133.30 GB.

The incident follows the group’s standard pattern of encrypting victim systems, exfiltrating selected data beforehand, and then pressuring payment by threatening to publish the stolen information on its dark-web leak portal.

Why This Matters for You and Your Family

If you bought or sold a home through Coldwell Banker D’Ann Harper, REALTORS in the past several years, your personal information may now sit in a ransomware repository. Real estate transactions routinely contain full names, addresses, phone numbers, email addresses, dates of birth, Social Security numbers, bank account details, and copies of driver’s licenses or passports. Once that information reaches a public leak site, it becomes inexpensive raw material for identity thieves, loan fraudsters, and stalkers.

Children’s records are often swept up as well when family transactions are involved. A single exposed family file can link parents’ credit histories to a minor’s name and school details, creating long-term privacy and safety risks that extend far beyond financial loss.

The Doxxing and Identity-Chain Implications

Ransomware leaks like this one rarely stop at the initial data set. Attackers and subsequent buyers stitch together fragments across breaches to build detailed identity chains. An email address from the real estate files can be matched to a password stolen from an earlier breach, a phone number from a retail breach, and a home address from public records. The result is a map that lets criminals locate you, impersonate you, or harass your family online and offline.

Credential leaks cascade quickly into account takeovers. Gaming accounts belonging to you or your children are frequent targets because they often reuse the same email and password combinations found in professional data sets. A compromised Roblox or Fortnite account can become the entry point for social engineering that eventually reveals your physical address or family routines.

Medusa’s Publicly Known Track Record

Public reporting attributes Medusa with emerging in 2021. The group has since hit hospitals, manufacturers, local governments, and professional service firms. Its typical playbook begins with initial access gained through phishing, remote desktop protocol brute force, or stolen credentials. Once inside, operators exfiltrate documents before deploying encryption. Extortion follows a double-pressure model: demands for ransom to decrypt systems and separate payments to prevent publication of the stolen data. Leak-site postings usually include countdown timers and samples of the stolen material.

What to do

• Run a DoxxScan to map every link between your handles, emails, phone numbers, and real identity so you can see exactly what chains back to the Coldwell Banker files.
• Rotate any password you used on the Coldwell Banker portal or with your real estate agent anywhere else it is reused, and switch on 2FA through an authenticator app rather than text messages.
• Enable continuous DoxxScan monitoring across 13.1B+ breach records and 100+ platforms so the next time your information surfaces you learn within hours instead of months.
• Cover the household with DoxxScan family protection that includes dependents and children’s gaming accounts, which frequently become targets when credential leaks chain back to the same home address.
• Let remediation specialists handle takedown requests across data brokers and exposed profiles while you focus on securing your own accounts.

The Coldwell Banker D’Ann Harper breach is a reminder that your home purchase or sale records are now high-value targets for organized ransomware operators. Taking concrete steps today limits how far attackers can travel down the identity chain that begins with this 133 GB leak. DoxxScan by GalaxyWarden delivers continuous monitoring across 13.1 billion+ breach records and more than 100 platforms, AI-powered identity-chain mapping, and hands-on remediation by specialists who also secure family and children’s gaming accounts that often sit at the end of these cascading breaches.