What is the WordPress `wp_login_failed` action and what should a security plugin implement alongside it?

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What is the WordPress `wp_login_failed` action and what should a security plugin implement alongside it?

Key points

  • `wp_login_failed` triggers on authentication failure
  • Security plugin should implement measures like lockout and logging
  • Notification to account owner enhances security
  • Measures like XML-RPC protection and application password monitoring are recommended

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