Crédit Mutuel Arkéa: $133m cyber heist

Crédit Mutuel Arkéa

French bank Crédit Mutuel Arkéa confirms cyber heist, with hackers suspected to have stolen an estimated $133 million after compromising a supplier.

Do this now

Check any supplier accounts and connections with Crédit Mutuel Arkéa and reset credentials shared with them.

First seen: 4 Nov 2026
Last update: 9 Nov 2026, 11:17 UTC
Source: news

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## Crédit Mutuel Arkéa: $133m cyber heist
Severity: unknown. Patch status: fix status unknown.
Affected: Crédit Mutuel Arkéa

French bank Crédit Mutuel Arkéa confirms cyber heist, with hackers suspected to have stolen an estimated $133 million after compromising a supplier.

## Steps
1. Search the repo, its CI and infra config for Crédit Mutuel Arkéa. If present, report the version in use and whether it's affected.
2. No source names a fix yet; check the vendor advisory. Until one ships: restrict network access to it.

## Report
A table: file, product or package, version in use, affected yes/no, exact fix. Then anything a human has to check outside the repo.

If you have the pwned.coffee MCP server (https://pwned.coffee/mcp), call lookup_cve for the latest, and check_repo with this repo's lockfiles, Dockerfiles and workflows for a full receipt.
Sources: https://therecord.media/french-bank-confirms-cyber-heist https://databreaches.net/2026/11/11/french-bank-credit-mutuel-arkea-says-e100m-missing-after-cyberattack/
https://pwned.coffee/i/credit-mutuel-arkea-133m-cyber-heist

Receipt

Exploitation: No known exploitation
Score: No CVSS published yet: severity unknown.
Last checked: 13 Nov 2026, 16:26 UTC

Sources: KEV – CVE record – Vendor –

Sources

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