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Commerzbank hit by cyberattack

Incident
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H score 40
1 unique sources, 1 articles

Summary

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Commerzbank customers were hit by an unauthorized withdrawals incident after a service-provider flaw enabled direct debits from customer accounts in November 2023. The activity affected the bank’s payment and transaction-processing path and was tied to alleged losses of about €30 million. Commerzbank said clients were impacted by the fraudulent activity, but customers suffered no financial losses.

Related Happenings

Operation Klonen arrests and asset seizures

Law Enforcement
H score31 First: 14.08.2026 21:04 Last: 14.08.2026 21:04 Sources 1

How related: Yesterday, Brazil’s Federal Police launched “Operation Klonen,” with support from Germany’s BKA, and executed 21 search-and-seizure warrants across seven cities in Brazil.

About this happening: Brazilian and German police arrested four suspects in Operation Klonen, pushing a €30 million bank-fraud case into a coordinated enforcement phase that also triggered...

Open Happening

Timeline

  1. 14.08.2026 21:04 1 articles · 2h ago

    Commerzbank hit by cyberattack

    Initial Disclosure

    A service-provider flaw enabled unauthorized direct debits from Commerzbank customer accounts during a four-day window in November 2023. The fraudulent withdrawals affected the bank’s transaction-processing path and triggered a wider investigation into the loss event.

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  2. 14.08.2026 21:04 1 articles · 2h ago

    Brazil arrests suspects and Europe charges others over Commerzbank fraud

    Legal Policy Action Update

    Brazilian Federal Police arrested four suspects and European authorities charged three others over a scheme that exploited a service-provider vulnerability to make unauthorized direct debits from Commerzbank customer accounts. Investigators said the theft ran over four days in November 2023, involved a faulty software update in a financial institution’s payment and transaction-processing system, and caused around €30 million ($34.6 million) in losses.

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