SecurityZones SURBL BV provides domain reputation threat intelligence data feeds that identify malicious domains engaged in phishing, botnet activity, and other abusive behavior. The service offers multiple data feeds updated every 1-2 minutes to detect current, active malicious domains. The MULTI feed provides comprehensive domain threat intelligence covering phishing, botnet activity, cracked and abused domains. The FRESH feed identifies newly registered domains before they establish reputation, addressing the fact that approximately 98% of new domains engage in malicious activity. The HASH/Shortener BL feed detects malicious activity hidden behind URL shorteners. SURBL BV is operated by an independent cyber research organization with over 20 years of experience in domain threat intelligence. The service combines proprietary research with data from partnerships with technology providers, registries, and registrars. The data feeds are used for email filtering (inbound and outbound), web filtering, DNS firewall, DNS RPZ, phishing protection, malware detection, bot infection identification, security alerts, SIEM integration, social media filtering, and vetting new account sign-ups. The service is utilized by security vendors, anti-spam solutions, service providers, ISPs, universities, and enterprises globally.