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# Hacker Claims to Leak Data on 389K People From French Valuation Firm Jestimo
- URL: https://darkwebinformer.com/hacker-claims-to-leak-data-on-389k-people-from-french-valuation-firm-jestimo/
- Published: 2026-06-11T16:29:17.000Z
- Updated: 2026-06-11T16:29:17.000Z
- Author: Dark Web Informer
- Tags: Leaks

Breach Report ![France flag](https://flagcdn.com/w40/fr.png)France Real Estate 

## Hacker Claims to Leak Data on 389K People From French Valuation Firm Jestimo

A threat actor using the alias **ChimeraZ** claims to have leaked the database of **Jestimo** (jestimo.com), a French real-estate valuation platform used by estate agents and rental managers. The post advertises **168,706 records covering about 389,365 people**, roughly **285 MB** of JSON, including agent and contact names, email addresses, phone numbers, property addresses, and valuation estimates. This is the latest in a run of French real-estate data leaks by the same actor this week. The claim is **unverified** and Jestimo has not publicly addressed it.

Severity HIGH 

Data389K people

PriceFree leak

Country![France flag](https://flagcdn.com/w40/fr.png)France

ActorChimeraZ

### ▣Post details

TargetJestimo (jestimo.com), real-estate valuation

Country![France flag](https://flagcdn.com/w40/fr.png)France

SectorReal Estate (valuation software)

ClaimCustomer / valuation database leaked

Data168,706 records, \~389,365 people (285 MB)

ObservedJun 11, 2026

PriceFree leak (reply-gated)

ActorChimeraZ

### !Allegedly exposed

- 389,365 people / 168,706 records (claimed)
- Agent & contact names
- Email addresses
- Phone numbers
- Property addresses
- Valuation / estimation amounts
- Estate-agency details
- Valuation report contents

### ◱Screenshot

[ ![Jestimo France alleged data leak Screenshot 1](https://storage.ghost.io/c/6b/16/6b16ac9c-cd67-432f-b0f3-bbec941084ff/content/images/2026/06/237895687926349867235987623948762.png) Screenshot 1 Redacted preview ](https://storage.ghost.io/c/6b/16/6b16ac9c-cd67-432f-b0f3-bbec941084ff/content/images/2026/06/237895687926349867235987623948762.png) 

### ⚠Potential impact

If genuine, a dataset of roughly **389,000 people** tied to property addresses, valuation amounts, and agent and client contact details would be a useful resource for targeted real-estate scams, phishing of agents and property owners, and profiling of higher-value properties. The valuation figures and ownership context make fraudulent approaches more convincing. Most of the data is contact and property information rather than financial accounts or credentials, but the scale and targeting value are significant. Figures and authenticity are unconfirmed.

### iStatus

Unverified 

Sample records and a file summary were posted to an underground forum, with downloads behind a reply gate; the sample records, contact details, and download links are not reproduced here. The claim has **not been independently confirmed** and Jestimo has not publicly addressed it.

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[DARK WEB INFORMER](https://darkwebinformer.com/) \- THREAT INTELLIGENCE