Shodan, Censys, ZoomEye, FOFA, Netlas

From Research Budgets to CVE Filtering and Target Tracking

Security researchers usually choose an internet asset search tool around a specific task: finding exposed services, identifying assets potentially associated with a vulnerability, or tracking changes to targets over time. The number of results needed, API automation requirements, and whether the work is commercial determine which plan is actually required.

Price differences among Shodan, Censys, ZoomEye, FOFA, and Netlas reflect both resource allowances and the tiers at which features become available. Comparing entry costs first, then the actual requirements for result retrieval, vulnerability filtering, and monitoring, makes it clearer what the budget pays for.

01 Entry Subscriptions and What the Monthly Fee Includes

The prices above are monthly subscription prices in US dollars on the international sites, using the actual discounted prices for ZoomEye and FOFA.…