# ImmuniWeb® Discovery vs Zerofox External Attack Surface Management: side-by-side comparison (2026) [ImmuniWeb® Discovery](https://cybersectools.com/tools/immuniweb-discovery) is a commercial [external attack surface management](https://cybersectools.com/categories/external-asm) solution by [ImmuniWeb](https://cybersectools.com/companies/immuniweb). [Zerofox External Attack Surface Management](https://cybersectools.com/tools/zerofox-external-attack-surface-management) is a commercial [external attack surface management](https://cybersectools.com/categories/external-asm) solution by [ZeroFox](https://cybersectools.com/companies/zerofox). Features, integrations, deployment and the company behind each one, side by side. Need the answer fast? [Best Attack Surface Management Solutions for Business](https://cybersectools.com/shortlists/best-attack-surface-solutions) picks Palo Alto Networks Cortex Xpanse, Microsoft Defender EASM, Mandiant Attack Surface Management and 4 more. ## Side-by-side comparison | | ImmuniWeb® Discovery | Zerofox External Attack Surface Management | |---|---|---| | Pricing model | Commercial | Commercial | | Category | External Attack Surface Management | External Attack Surface Management | | Verified | No | No | | Deployment type | Cloud | Cloud | | Company size fit | SMB, Mid-Market, Enterprise | SMB, Mid-Market, Enterprise | | Company | ImmuniWeb | ZeroFox | | Headquarters | – | – | ### Use cases and capabilities | | ImmuniWeb® Discovery | Zerofox External Attack Surface Management | |---|---|---| | Dark Web Monitoring | Yes | Yes | ### Core features **ImmuniWeb® Discovery** 10 features listed. Sign in on the page to see them. **Zerofox External Attack Surface Management** 10 features listed. Sign in on the page to see them. ### Integrations **ImmuniWeb® Discovery** 3 integrations listed. Sign in on the page to see them. **Zerofox External Attack Surface Management** 42 integrations listed. Sign in on the page to see them. ## ImmuniWeb® Discovery vs Zerofox External Attack Surface Management FAQ Common questions when comparing ImmuniWeb® Discovery vs Zerofox External Attack Surface Management for external attack surface management. ### What is the difference between ImmuniWeb® Discovery and Zerofox External Attack Surface Management? **ImmuniWeb® Discovery**: ImmuniWeb Discovery is an attack surface management platform that continuously monitors an organization's external digital assets for security vulnerabilities, misconfigurations, and threats across domains, applications, cloud resources, and the dark web. Built by ImmuniWeb. **Zerofox External Attack Surface Management**: Discovers and manages internet-facing assets with vulnerability prioritization. Built by ZeroFox. The table above shows where their features, integrations, deployment and company size fit differ. ### Who makes ImmuniWeb® Discovery and Zerofox External Attack Surface Management? **ImmuniWeb® Discovery** is made by ImmuniWeb. **Zerofox External Attack Surface Management** is made by ZeroFox. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit. ### Is ImmuniWeb® Discovery a good alternative to Zerofox External Attack Surface Management? Often, yes. ImmuniWeb® Discovery and Zerofox External Attack Surface Management are both External Attack Surface Management products, and both cover Dark Web Monitoring. Use the table above to see where features, deployment and company size fit differ. ## Related comparisons - [ImmuniWeb® Discovery vs Outpost24 External Attack Surface Management](https://cybersectools.com/compare/immuniweb-discovery-vs-outpost24-external-attack-surface-management) - [ImmuniWeb® Discovery vs Halo Security Attack Surface Management](https://cybersectools.com/compare/halo-security-attack-surface-management-vs-immuniweb-discovery) - [ImmuniWeb® Discovery vs QuimeraX External Attack Surface Management](https://cybersectools.com/compare/immuniweb-discovery-vs-quimerax-external-attack-surface-management) - [Zerofox External Attack Surface Management vs Outpost24 External Attack Surface Management](https://cybersectools.com/compare/outpost24-external-attack-surface-management-vs-zerofox-external-attack-surface-management) - [Zerofox External Attack Surface Management vs Halo Security Attack Surface Management](https://cybersectools.com/compare/halo-security-attack-surface-management-vs-zerofox-external-attack-surface-management) - [Zerofox External Attack Surface Management vs QuimeraX External Attack Surface Management](https://cybersectools.com/compare/quimerax-external-attack-surface-management-vs-zerofox-external-attack-surface-management) ## Alternatives to each - [See all ImmuniWeb® Discovery alternatives](https://cybersectools.com/alternatives/immuniweb-discovery) - [See all Zerofox External Attack Surface Management alternatives](https://cybersectools.com/alternatives/zerofox-external-attack-surface-management) --- Source: https://cybersectools.com/compare/immuniweb-discovery-vs-zerofox-external-attack-surface-management For AI agents: each product above has its own Markdown page (add .md to its URL, for example https://cybersectools.com/tools/immuniweb-discovery.md). Every CybersecTools shortlist is listed at https://cybersectools.com/shortlists.md. More on ImmuniWeb® Discovery and Zerofox External Attack Surface Management: funding, momentum, hiring and news, plus the full product and company record, are available through the Mandos MCP Server (paid plans), which connects to AI assistants: https://mandos.io/mcp?utm_source=cybersectools.com&utm_medium=compare-md