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183 Million Email Logins Exposed in Malware Credential Dump as Google Denies Gmail Breach

Researchers say the 3.5TB trove came from infostealer logs and has been added to Have I Been Pwned for users to check exposure.

Overview

  • Security firm Synthient and Have I Been Pwned report the dataset aggregates stealer logs from infected devices rather than any compromise of Google servers.
  • The collection spans roughly 23 billion records overall and includes about 183 million unique email–password pairs, with around 16.4 million addresses new to any known breach.
  • Gmail addresses feature heavily, but Outlook, Yahoo and many other providers are also represented, increasing the risk of credential-stuffing across multiple services.
  • Google says there is no Gmail infrastructure breach and notes it resets exposed passwords when detected, urging users to enable 2‑step verification or adopt passkeys.
  • The logs were first detected in April and listed on Have I Been Pwned on October 21, with researchers verifying that some exposed passwords still matched active accounts.