Unverified50% confidenceTradeoffExact time
Reverse DNS verification has a performance overhead (each verification requires two DNS queries); in high-traffic scenarios, it is recommended to use it in combination with IP whitelist caching.
1
Sources
50%
Confidence
Long-term
Relevance
8/14/2026
First Seen
Sources
黑客伪装ClaudeBot发起大规模漏洞扫描：识别与防御指南
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