---
title: "Data breach at Fédération royale belge des échecs (FRBE/KBSB)"
description: "On September 25, 2026, a user on a cybercrime forum claimed to be selling a database from the Royal Belgian Chess Federation (FRBE/KBSB), about 2.4 MB in JSON format. The samples shown reportedly combined player records (names, federal and FIDE IDs, birth year, club, ELO ratings) with club records c"
canonical: https://inyourgeek.com/en/fuites-de-donnees/2026-09-25-federation-royale-belge-des-echecs-frbe
type: fuite-de-donnees
author: "Sébastien Soulier"
publisher: "InYourGeek"
language: en
datePublished: 2026-09-25
dateModified: 2026-09-25
---
# Fédération royale belge des échecs (FRBE/KBSB)

Data breach — Critical

On September 25, 2026, a user on a cybercrime forum claimed to be selling a database from the Royal Belgian Chess Federation (FRBE/KBSB), about 2.4 MB in JSON format. The samples shown reportedly combined player records (names, federal and FIDE IDs, birth year, club, ELO ratings) with club records containing officials' and treasurers' contact details, including phone numbers, postal addresses and IBANs. These figures and categories come solely from the attacker's post and have not been confirmed by the federation.

| Fact | Value |
| --- | --- |
| Disclosed on | September 25, 2026 |
| Accounts affected | 5,914 |
| Sector | Nonprofits |
| Country | Belgium |
| Cause | Undisclosed |
| Severity | Critical |
| Status | Reported |

## Exposed data

- Full name
- Email address
- Phone number
- Postal address
- Date of birth
- Customer ID
- Banking data (IBAN, card)

## 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.
- Watch your statements. On any unknown debit, block the card and request a refund — French law (art. L133-18) entitles you to it.
- 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 Royale Belge des Échecs](https://frenchbreaches.com/alertes/f-d-ration-royale-belge-des-checs-mujyxodizhqrcrsf8b) — FrenchBreaches

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

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