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# ECB publishes TIBER-EU guide for DORA bank penetration testing
- URL: https://sovereigntymonitor.eu/news/2025-11-21-ecb-tiber-eu-dora-penetration-testing-guide/
- Published: 2025-11-21T12:00:00.000Z
- Updated: 2026-10-11T16:02:13.000Z
- Description: ECB Banking Supervision published a TIBER-EU Guide on 21 November 2025. It sets out how significant euro area banks must run DORA's threat-led penetration tests at least every three years under ECB oversight.
- Author: Reidar Balstad
- Tags: Policy and law, #news, #verified, #editor-read

Verified Editor-read [European Central Bank Banking Supervision, 21 November 2025](https://www.bankingsupervision.europa.eu/ecb/pub/pdf/ssm.supervisory%5Fguide202511.en.pdf?ref=sovereigntymonitor.eu)

**What it does not test.** This does not establish that any bank has completed a test under the guide or that it reduces euro area dependence on non-EU cloud and tech providers.

**How this item counts.** This item is dated before the index starts on 1 January 2026, so it does not count in the [European Sovereignty Index](https://sovereigntymonitor.eu/sovereignty-index/).

**How this item was made.** Drafted by an AI system (Claude (Anthropic)) from the source cited above; read and approved by the editor on 2026-10-11\. [How the record is made](https://sovereigntymonitor.eu/method/#how-the-record-is-made)