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Beware of Phishing Sites Impersonating Anthropic Claude

·2026.07.14 02:04

Key point

A phishing site impersonating Anthropic's official training course has been found stealing Google OAuth session tokens.

Details

A phishing site (anthropiccertifications[.]com) impersonating Anthropic's official certification course (CCAF) has been discovered, and caution is needed.

The site perfectly replicates Anthropic's design language and fonts, causing confusion for users. The main attack methods are as follows.

  • OAuth Theft: It prompts a Google SSO login to start the course, then steals the user's Google OAuth session token.
  • Permission Theft: During login, it requests access permissions for an app named 'Claude' or 'Claude for Gmail'.
  • Payment Inducement: Although the official training course is free, it demands a $19 upgrade fee at the payment stage.

If you have already visited the site and attempted to log in, you should immediately go to Google Security Settings and revoke access permissions for the suspicious Claude-related app.

anthropicclaudecybersecurityphishinggoogle-oauth
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