---
title: "Data breach at Terranota"
description: "A hacker claims to have released for free, on 20 October 2026, a database attributed to Terranota, a French company providing regulatory and urban-planning support to real-estate professionals. The release is said to hold 47,923 rows totalling 186 MB; the row count does not necessarily match the num"
canonical: https://inyourgeek.com/en/fuites-de-donnees/2026-10-20-terranota
type: fuite-de-donnees
author: "Sébastien Soulier"
publisher: "InYourGeek"
language: en
datePublished: 2026-10-20
dateModified: 2026-10-20
---
# Terranota

Data breach — Moderate

A hacker claims to have released for free, on 20 October 2026, a database attributed to Terranota, a French company providing regulatory and urban-planning support to real-estate professionals. The release is said to hold 47,923 rows totalling 186 MB; the row count does not necessarily match the number of distinct people. The samples show names of property owners and contacts, property addresses, professional email addresses, file and cadastral parcel references, and identifiers of notaries and staff. No passwords or banking data appear in the sample; the authenticity of the data and the date or method of extraction are unconfirmed.

Linking an owner's name to the address and characteristics of their property lets a malicious third party target these people, for example with phishing emails or calls referring to a real-estate file.

| Fact | Value |
| --- | --- |
| Disclosed on | October 20, 2026 |
| Sector | Digital services |
| Country | France |
| Cause | Undisclosed |
| Severity | Moderate |
| Status | Reported |

## Exposed data

- Full name
- Email address
- Employment data
- Postal address
- Customer ID
- Other personal data

## What you can do

- Expect phishing attempts quoting your name and this company. A message that knows your details is not legitimate for that reason.
- You can ask the organisation exactly what was exposed about you (right of access), and complain to the DPA if no answer comes within a month.

## Sources

- [Terranota](https://frenchbreaches.com/alertes/terranota-mvh1ackqc8kzf8diegm) — FrenchBreaches

_Entry built from the cited sources after a corroboration check, then reviewed before publication._

---

Equivalent HTML page : https://inyourgeek.com/en/fuites-de-donnees/2026-10-20-terranota
Published by InYourGeek — https://inyourgeek.com/en/a-propos
Method and safeguards : https://inyourgeek.com/en/methode
Full register : https://inyourgeek.com/en/fuites-de-donnees