2026 · Data breach

AfD

Breached 9 September 2026 · Published 27 October 2026 · afd.de

THE HUMAN IMPACT

Behind the exposed accounts

In September 2026, the German political party Alternative für Deutschland (AfD) suffered a data breach which exposed 345k unique email addresses.

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Logan Jeffrey / Unsplash · Personal research · context photograph, not an affected user
345,439Accounts exposed
35/100Moderate severity
2Types of data
VerifiedBy HIBP

On 9 September 2026, AfD was breached. 345,439 accounts were exposed, including email addresses, email messages. MyRecon rates it 35/100, moderate.

FOLLOW THE RECORD

How the story unfolded

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  1. 01Reported breach date

    2026-09-09

    Read the HIBP source record

  2. 02Entry point

    The published account does not explain the exact way the data was obtained.

    Read the HIBP source record

  3. 03Discovery and disclosure

    A separate discovery or company-disclosure date is not established by this feed record.

    Read the HIBP source record

  4. 04Added to the breach catalogue

    2026-10-27. This is the catalogue date, not necessarily the disclosure date.

    Read the HIBP source record

  5. 05Reported outcome

    345,439 accounts are listed in this breach. This is a count of accounts, not necessarily individual people. The reported exposed data includes Email addresses, Email messages.

    Read the HIBP source record

Were you part of this breach?

Only a result for this incident is shown. On submission, your email is sent through MyRecon to XposedOrNot for a breach lookup. MyRecon does not save this check to your history. Provider coverage can be incomplete.

The story behind the breach

In September 2026, the German political party Alternative für Deutschland (AfD) suffered a data breach which exposed 345k unique email addresses. The following month, hundreds of gigabytes of data containing hundreds of thousands of emails and attachments was published online, with searchable AI-generated summaries and downloadable original files.

An analysis of the incident reported that the breach was detected as early as 9 September, with a subsequent intrusion occurring five days later. In its public statement , AfD attributed the breach to an attack on a hosting provider, identified in subsequent reporting as the party-owned Alternita Dienstleistungs GmbH.

Breach description from Have I Been Pwned, used under a CC BY 4.0 licence.

Read the original disclosure ↗

How did it happen?

The published account does not explain the exact way the data was obtained.

What was the motive?

The published account does not establish the motive. We cannot tell what the attackers intended from the exposed data alone.

Reported demands or attempts to sell data describe what happened, rather than prove every attacker's intention.

What was the outcome?

345,439 accounts are listed in this breach. This is a count of accounts, not necessarily individual people.

The reported exposed data includes Email addresses, Email messages.

What was exposed, and why it matters

Email addresses

The address becomes a confirmed, active target, expect more phishing, better aimed.

Email messages

Adds detail to a profile that can be assembled from several breaches at once.

What to do if you were in it

Your next steps

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Questions people ask about this breach

Was my email address in the AfD breach?

Use the email box on this page. The result applies only to this incident. If the provider does not cover this breach, we say so. A missing match does not prove you were unaffected.

What data was leaked in the AfD breach?

email addresses, email messages. Each one is explained above, along with what it means for the person it belongs to.

When did it happen, and when did it become public?

The breach is dated 9 September 2026. It was published to Have I Been Pwned on 27 October 2026, a gap of 48 days during which the data was already out.

Is the AfD breach real?

Yes. Have I Been Pwned lists it as verified, meaning the data was checked against the source rather than taken on trust.

How many people were affected?

345,439 accounts. That is accounts rather than people, one person often has several.

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Three kinds of content appear on this page and they are kept apart deliberately. The breach description is quoted from Have I Been Pwned under its licence. The severity score, the field-by-field explanation and the advice are computed from the record itself, every sentence derives from a number or a flag in it, which is what stops the analysis drifting from the evidence. Anything under the "MyRecon's take" byline is editorial: our reading of this breach, presented as opinion rather than as a finding.

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