What is Blocklisting?
Blocklisting (also called blocklist submission or blacklisting) is a critical first-response mechanism when phishing sites or malicious domains are discovered. When a URL is added to major blocklists, browsers display warning pages, email security tools flag links as dangerous, and network security appliances block access entirely. Major blocklist networks include Google Safe Browsing (which protects Chrome, Firefox, and Safari users), Microsoft SmartScreen, OpenPhish, Spamhaus, and the Anti-Phishing Working Group (APWG) eCX. A successful blocklist submission can prevent up to 90% of internet users from reaching a malicious site. Blocklisting serves as immediate threat suppression while longer-term takedown efforts proceed through hosting providers and registrars.
Business Impact
Speed of blocklist submission directly correlates with victim protection. Each hour a phishing site operates without blocklist coverage enables additional credential harvesting and fraud. Organizations that integrate blocklisting into their threat response workflow see measurably lower customer impact from brand impersonation attacks. However, blocklisting alone is not sufficient—determined attackers rotate domains and infrastructure faster than blocklists update, making blocklisting a necessary but incomplete defense that must be paired with takedown capabilities.
Allure Security's Approach
Allure Security automatically submits confirmed impersonation threats to an extensive partner network of anti-phishing services and security providers, including Google Safe Browsing, OpenPhish, CleanDNS, Spamhaus, and APWG eCX. This rapid global blocking minimizes threat exposure while the platform simultaneously pursues permanent removal through takedown processes.