<ul><li>One way to quickly find unprotected subdomains is to use crt.sh, which provides information based on issued certificates.</li><li>Using the subfinder application allows for configuration with multiple sources to find valid subdomains.</li><li>To check if the found domains are active, the utility dnsx can be used.</li><li>Another helpful tool is httpx, which not only checks if domains are alive but can also create screenshots for visual evaluation.</li></ul>

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