---
title: "Data breach at Judo Vlaanderen"
description: "On 28 September 2026, an individual claimed on a data-trading forum to hold a database from the Flemish Judo Federation (Judo Vlaanderen) containing information on roughly 98,495 members. The claimed data includes names, dates of birth, addresses, emails, phone numbers, nationalities, passwords said"
canonical: https://inyourgeek.com/en/fuites-de-donnees/2026-09-28-judo-vlaanderen
type: fuite-de-donnees
author: "Sébastien Soulier"
publisher: "InYourGeek"
language: en
datePublished: 2026-09-28
dateModified: 2026-09-28
---
# Judo Vlaanderen

Data breach — Critical

On 28 September 2026, an individual claimed on a data-trading forum to hold a database from the Flemish Judo Federation (Judo Vlaanderen) containing information on roughly 98,495 members. The claimed data includes names, dates of birth, addresses, emails, phone numbers, nationalities, passwords said to be stored in plain text, and several hundred identity documents. These figures are so far only the seller's claims: the organisation has not issued any statement and no independent source corroborates them.

If the passwords are indeed exposed in plain text, people reusing the same password elsewhere risk having their other online accounts taken over.

| Fact | Value |
| --- | --- |
| Disclosed on | September 28, 2026 |
| Accounts affected | 98,495 |
| Sector | Nonprofits |
| Country | Belgium |
| Cause | Undisclosed |
| Severity | Critical |
| Status | Reported |

## Exposed data

- Full name
- Date of birth
- Postal address
- Email address
- Phone number
- Customer ID
- Connection data (IP, logs)
- Password (plaintext)
- Identity document
- Other personal data

## What you can do

- Change that password — and everywhere you reused it. That is how a leak spreads to your other accounts.
- Turn on two-factor authentication on the affected accounts: a stolen password is then no longer enough.
- Expect phishing attempts quoting your name and this company. A message that knows your details is not legitimate for that reason.
- These documents enable identity theft, and cannot be reissued at will. Keep the notification letter: it proves where the leak came from if an account is opened in your name.
- 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

- [Fédération flamande de judo](https://frenchbreaches.com/alertes/f-d-ration-flamande-de-judo-mulg7iicslkivaezmf9) — FrenchBreaches

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

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