SSLBL - SSL Blacklist is a free threat intel feeds solution. zvelo PhishBlocklist™ is a commercial threat intel feeds solution by Zvelo. Features, integrations, deployment and the company behind each one, side by side.
A project that detects malicious SSL connections by identifying and blacklisting SSL certificates used by botnet C&C servers and identifying JA3 fingerprints to detect and block malware botnet C&C communication.
Curated phishing threat intelligence feed with predictive detection
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Based on what each listing shows: deployment, company size, price and open source.
SSLBL - SSL Blacklist fits if you are a startup and you need a free product.
Common questions when comparing SSLBL - SSL Blacklist vs zvelo PhishBlocklist™ for threat intel feeds.
SSLBL - SSL Blacklist: A project that detects malicious SSL connections by identifying and blacklisting SSL certificates used by botnet C&C servers and identifying JA3 fingerprints to detect and block malware botnet C&C communication.
zvelo PhishBlocklist™: Curated phishing threat intelligence feed with predictive detection, built by Zvelo.
The table above shows where their features, integrations, deployment and company size fit differ.
Often, yes. SSLBL - SSL Blacklist and zvelo PhishBlocklist™ are both Threat Intel Feeds products. Key differences: SSLBL - SSL Blacklist is Free while zvelo PhishBlocklist™ is Commercial. Use the table above to see where features, deployment and company size fit differ.
No Threat Intel Feeds shortlist yet. This is the closest one.
Updated 2026-11-01
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