---
title: "Data breach at CrowdSec"
description: "On September 16, 2026, an actor claimed on a cybercrime forum to have published an archive presented as CrowdSec's non-public source code, over 300 repositories totaling roughly 3.4 GB, obtained through an exposed API key. The claim states the archive includes the names and email addresses of code c"
canonical: https://inyourgeek.com/en/fuites-de-donnees/2026-09-16-crowdsec
type: fuite-de-donnees
author: "Sébastien Soulier"
publisher: "InYourGeek"
language: en
datePublished: 2026-09-16
dateModified: 2026-09-16
---
# CrowdSec

Data breach — Moderate

On September 16, 2026, an actor claimed on a cybercrime forum to have published an archive presented as CrowdSec's non-public source code, over 300 repositories totaling roughly 3.4 GB, obtained through an exposed API key. The claim states the archive includes the names and email addresses of code contributors alongside technical configuration files. CrowdSec, a French cybersecurity vendor, has not publicly confirmed the incident.

Exposed contributor names and emails would let a third party craft targeted, credible phishing messages impersonating CrowdSec.

| Fact | Value |
| --- | --- |
| Disclosed on | September 16, 2026 |
| Sector | Digital services |
| Country | France |
| Cause | Credential stuffing |
| Severity | Moderate |
| Status | Reported |

## Exposed data

- Full name
- Email address
- Employment 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

- [CrowdSec : fuite de données revendiquée de ~3,4 Go de code source non public](https://fuitesinfos.fr/article/2026-09-16-crowdsec) — Fuites Infos
- [CrowdSec : son code source en fuite après la compromission d'une clé API](https://www.cyberattaque.org/crowdsec-son-code-source-en-fuite-apres-la-compromission-dune-cle-api/) — Cyberattaque.org
- [CrowdSec, expert en cybersécurité, piraté : 3,4 Go de code revendiqués](https://frenchbreaches.com/alertes/crowdsec-mu4npqnxblj4hm33zkp) — FrenchBreaches

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

---

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