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# Leboncoin Immobilier Data Leak: 4M French Property Listings Exposed
- URL: https://darkwebinformer.com/leboncoin-immobilier-data-leak-4m-french-property-listings-exposed/
- Published: 2026-06-08T17:11:27.000Z
- Updated: 2026-06-08T17:11:27.000Z
- Author: Dark Web Informer
- Tags: Leaks

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

## Leboncoin Immobilier Data Leak: 4M French Property Listings Exposed

A threat actor using the alias **ChimeraZ** claims to be leaking a **4 million-listing** real-estate dataset branded "**Leboncoin Immobilier**," aggregated from 13 French property portals including Leboncoin, SeLoger, and PAP. The data reportedly totals about **4.38 GB** of JSON with roughly **1.1 million phone numbers**, listing details, and seller contact information. The actor hints the underlying compromise comes from an upstream third party (to be revealed), so this may not be a direct breach of Leboncoin. The claim is **unverified**.

Severity HIGH 

Data4M+ listings

Price4 forum points

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

ActorChimeraZ

### ▣Post details

TargetLeboncoin Immobilier (aggregated real-estate listings)

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

SectorReal Estate / Classifieds

ClaimAggregated listing dataset leaked (source teased)

Data\~4M listings (13 portals); 1.1M phone numbers

ObservedJun 8, 2026

Price4 forum points (paywall)

ActorChimeraZ

### !Allegedly exposed

- \~4M property listings (claimed)
- 1.1M+ phone numbers
- Seller / lister names
- Listing prices & property details
- Postal codes & listing locations
- Ad URLs & references
- Data from 13 French property portals
- Listing photo / media links

### ◱Screenshot

[ ![Leboncoin Immobilier France alleged data leak Screenshot 1](https://storage.ghost.io/c/6b/16/6b16ac9c-cd67-432f-b0f3-bbec941084ff/content/images/2026/06/2347958697862359872634987623978623.png) Screenshot 1 Redacted preview ](https://storage.ghost.io/c/6b/16/6b16ac9c-cd67-432f-b0f3-bbec941084ff/content/images/2026/06/2347958697862359872634987623978623.png) 

### ⚠Potential impact

If genuine, an aggregated set of **4 million listings** with around **1.1 million phone numbers**, seller names, property values, and locations would be a strong resource for spam, vishing, and property-related scams targeting both sellers and buyers across France. Much of the listing content is public ad data, but the bulk phone-and-name aggregation is the sensitive part. Because the actor frames the source as an upstream third party, the true compromised entity may differ from the portals named, and the figures are unconfirmed.

### iStatus

Unverified 

A data sample and per-site line counts were posted to an underground forum, with downloads behind a small points paywall; the sample records, seller contact details, and download links are not reproduced here. The actor teased that the source of the compromise would be revealed later. The claim has **not been independently confirmed**, and the named portals have not addressed it.

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