Add detection rule for Claude impersonation #4683
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This rule detects impersonation of Anthropic or Claude using newly registered domains. It flags messages based on sender display names and checks for domain age and specific content in the message.
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…newly registered domains
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…n: Claude with newly registered domains
Removed commented-out conditions for body links in impersonation detection rule.
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…th newly registered domains
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…tion: Claude with newly registered domains
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…tion: Claude with newly registered domains
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…th newly registered domains
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…th newly registered domains
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Jun 19, 2026
…tion: Claude with newly registered domains
Updated the impersonation detection rule to include checks for 'claude' and 'anthropic' in the subject and body text, while removing redundant conditions.
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…tion: Claude with newly registered domains
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…th newly registered domains
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…th newly registered domains
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Jul 14, 2026
…tion: Claude with newly registered domains
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…tion: Anthropic and Claude lure
Updated the rule to include newly registered domains and refined conditions for detecting impersonation of Anthropic and Claude.
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…/Claude with newly registered domain
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…tion: Anthropic/Claude with newly registered domain
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Description
This rule detects impersonation of Anthropic or Claude using newly registered domains.
Associated samples
Associated hunts