Have I Been Pwned Adds 1.96 Billion Accounts from Synthient Data Breach

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Have I Been Pwned Adds 1.96 Billion Accounts from Synthient Data Breach

First seen 12 Nov 2025, 19:02 UTC • •24.3

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ThreatCluster •March 12, 2026 at 13:27 UTC

Have I Been Pwned (HIBP) has integrated a dataset containing 1.96 billion unique email addresses and 1.3 billion passwords from previous breaches, sourced from Synthient's credential stuffing threat data. This update significantly expands the database of compromised accounts available for users to check if their information has been exposed.

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2 entities, 1 inferred relationships (STIX 2.1).

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Technique (2)

Credential Stuffing
Data Breach

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Credential Stuffing related to Data Breach

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