PhishTank is a community-driven clearinghouse for phishing data, operated by Cisco Talos Intelligence Group. It maintains a publicly accessible archive of submitted phishing URLs, allowing users to browse, search, and verify reported phishing sites. **Core Functionality:** - Phish Archive: A continuously updated log of submitted phishing URLs, each assigned a unique ID with metadata including submission date, submitting user, validity status (Valid Phish / Invalid / Unknown), and online status (Online / Offline / Unknown). - Search by Targeted Brand: Allows users to query the phishing archive filtered by the brand or organization being impersonated. - Search by ASN: Enables lookup of phishing submissions associated with specific Autonomous System Numbers, useful for network-level analysis. **Community Contributions:** Registered users can submit suspected phishing URLs and vote on the validity of submissions made by others. Validity determinations are crowd-sourced through this voting mechanism. **Data Access:** The phishing data collected is made available for use by researchers, developers, and security vendors, commonly integrated into anti-phishing tools and threat intelligence workflows.