What was exposed, when it happened, and which databases confirm it.
- accounts
- 345,439
- Breached
- September 9, 2026
- Last Update
- October 27, 2026
Were you caught in this breach?
Search your email, phone number or username against every record CheckLeaked indexes.
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What happened
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.
Compromised Info
- Email addresses
- Email messages
Attestation
Four independent databases catalog this breach and they do not always agree. Each lane below is one source’s own count.
Sources & Link Methods
- HIBP
FAQ
What was leaked in the AfD breach?
The AfD breach exposed: Email addresses and Email messages.
When did the AfD breach happen?
The AfD breach was disclosed on September 9, 2026 and affected 345,439 records.
Am I affected by the AfD breach?
Search your email, phone or username at checkleaked.cc to find out whether your data appears in the AfD leak.