Security· ★★★· bearish·

Denmark's CPR register breached: data of 8.8 million people stolen

  • —Data on 8.8 million people extracted from the CPR register — about 80% of 11 million records
  • —Breach lasted ten days via a private company account, ministry said on Oct. 5
  • —AltID wallet launched June 4, 2026 under EU digital identity requirements
  • —AltID uses zero-knowledge proofs but is tied to MitID and the CPR number
Why it matters: The breach shows a decentralized wallet offers little protection when its source of truth is a central register — a risk that also applies to crypto holders' data under DAC8.
Source: Journal du Coin
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