Coldwell Banker D’Ann Harper, REALTORS Listed by medusa Ransomware Group: Ransomware Claim — What’s Alleged & What To Do

For clients, homebuyers, sellers, sales agents and employees connected to Coldwell Banker D’Ann Harper, REALTORS, a listing by the medusa ransomware group raises immediate practical questions about personal and financial information. The group claims to have taken internal files in a ransomware attack; if those files include contact details, transaction records or identification data, the people involved face risks of phishing, identity misuse or unwanted outreach. Public reporting so far leaves the exact scope of affected individuals unconfirmed, so caution and basic monitoring remain the most useful first responses.

The incident was reported on 16 March 2025. Coldwell Banker D’Ann Harper, REALTORS is a residential real-estate brokerage operating in Central and South Texas. The listing itself is a claim by the threat actor; independent confirmation of the full extent of any compromise has not been detailed in the available record.

What happened

According to the public listing, the medusa ransomware group added Coldwell Banker D’Ann Harper, REALTORS to its leak site and stated that it had exfiltrated internal files during a ransomware attack. The group further claimed the volume of data taken was 133.30 GB. The number of people affected is unknown. No public details have been released about the precise date of intrusion, the technical method used, whether systems were encrypted, or whether any ransom demand was paid. The available facts therefore consist of the group’s claim of exfiltration of internal files and the stated data volume; everything else remains undisclosed.

Who is medusa?

Medusa is a ransomware operation that has been active in recent years and is known for a double-extortion model. After gaining access to a network, the group typically steals data and then encrypts systems, threatening to publish the stolen material on a dedicated leak site if a ransom is not paid. Listings on that site are therefore claims made by the group itself and should be treated as unverified until corroborated by the victim organisation or independent investigators. Medusa has previously targeted a range of sectors, including professional services and mid-sized enterprises, and often publicises sample files or data volumes to increase pressure. No additional statements by the group specifically about Coldwell Banker D’Ann Harper, REALTORS beyond the listing and the 133.30 GB figure appear in the provided record.

Coldwell Banker D’Ann Harper, REALTORS and its sector

Coldwell Banker D’Ann Harper, REALTORS is a residential real-estate brokerage serving Central and South Texas. It maintains multiple offices and a team of more than 550 sales agents; its corporate office is located at 18756 Stone Oak Pkwy Ste 102, San Antonio, Texas. The firm is part of the larger Coldwell Banker network, which operates thousands of offices and nearly 100 000 agents worldwide. Public information indicates the local entity has approximately 117 employees.

Real-estate brokerages routinely handle sensitive information: client contact details, property records, financial documents related to purchases and sales, identification copies, and internal correspondence among agents and staff. Because transactions involve large sums of money and personal identifiers, a breach at such an organisation can expose both consumers and professionals to secondary fraud or privacy harms. The sector’s reliance on digital document exchange and customer-relationship systems makes it an attractive target for ransomware groups seeking data that can be monetised or used for leverage.

What was likely exposed

The only data types named in the available facts are “internal files” said to have been exfiltrated, with a claimed total volume of 133.30 GB. Exact contents have not been disclosed. Organisations of this kind typically hold client names and contact information, property listings and transaction histories, agent personnel records, contracts, and related financial or identification documents. Whether any of those categories were among the files taken remains unconfirmed. Readers should therefore treat specific data types as possible rather than established.

Why it matters

If personal or financial details were included among the internal files, affected individuals could face phishing attempts that reference real transactions, attempts to open fraudulent accounts, or unsolicited contact. Agents and employees might see their own credentials or internal communications misused. For the brokerage itself, the incident can disrupt operations, require notification and remediation costs, and erode client trust. Because the number of people affected is unknown and the precise contents unconfirmed, the practical impact cannot yet be quantified; the risk, however, is concrete enough to warrant ordinary protective steps by anyone who has done business with the firm.

Were you affected?

If you have been a client, agent or employee of Coldwell Banker D’Ann Harper, REALTORS, consider monitoring financial accounts and credit reports for unexpected activity, and treat unsolicited emails or calls that reference property matters with extra caution. Change passwords on any accounts that may have been linked to the firm and enable multi-factor authentication where available. You can also run a free exposure scan of your email address to check whether it has already appeared in known breach data sets. Official notifications, if any are issued by the company, will provide the most reliable guidance on next steps.

AICompiled with AI assistance from public sources and published under our editorial standards.