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During an assessment, you want to enumerate subdomains without alerting target detection systems. Which approach balances thoroughness and stealth?

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During an assessment, you want to enumerate subdomains without alerting target detection systems. Which approach balances thoroughness and stealth?

Use passive sources (CT logs, passive DNS), limited-rate queries to resolvers, and targeted brute-force only against likely names with randomized timing and the operator’s consent

Run a massive, multi-threaded brute-force against the authoritative server from many distributed IPs (no risk)

Use continuous AXFR attempts until it succeeds

Use DNS amplification queries to elicit responses faster

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