---
title: "Data breach at Reserver.fr"
description: "A cybercriminal using the alias \"Alduin\" published on 25 September 2026 a database presented as an old MySQL backup, dated 2024, from Reserver.fr, a French travel agency specializing in flight bookings, along with a copy of the site's WordPress source code. The file, about 287 MB covering roughly 34"
canonical: https://inyourgeek.com/en/fuites-de-donnees/2026-09-25-reserver-fr
type: fuite-de-donnees
author: "Sébastien Soulier"
publisher: "InYourGeek"
language: en
datePublished: 2026-09-25
dateModified: 2026-09-25
---
# Reserver.fr

Data breach — Moderate

A cybercriminal using the alias "Alduin" published on 25 September 2026 a database presented as an old MySQL backup, dated 2024, from Reserver.fr, a French travel agency specializing in flight bookings, along with a copy of the site's WordPress source code. The file, about 287 MB covering roughly 34,000 lines, mixes login identifiers, names, email addresses, IP addresses, dates and messages left on the site. Fuites Infos estimates the incident affects about 13,900 distinct individuals. Reserver.fr had not issued any public statement at the time of these reports, and the exact age of the data remains uncertain.

Cross-referencing names, emails, IP addresses and messages allows several pieces of information to be linked to the same person, facilitating targeted phishing.

| Fact | Value |
| --- | --- |
| Disclosed on | September 25, 2026 |
| Accounts affected | 13,900 |
| Sector | Transport and travel |
| Country | France |
| Cause | Misconfigured database |
| Severity | Moderate |
| Status | Reported |

## Exposed data

- Full name
- Email address
- Customer ID
- Connection data (IP, logs)
- 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

- [Réserver.fr](https://frenchbreaches.com/alertes/r-server-fr-muh0tz8riz7fzvv5x2) — FrenchBreaches
- [Reserver.fr : fuite de données revendiquée visant environ 13 900 personnes](https://fuitesinfos.fr/article/2026-09-25-reserver-fr) — Fuites Infos

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

---

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