# Outpost24 External Attack Surface Management vs SurfaceDiff: side-by-side comparison (2026) [Outpost24 External Attack Surface Management](https://cybersectools.com/tools/outpost24-external-attack-surface-management) is a commercial [external attack surface management](https://cybersectools.com/categories/external-asm) solution by [Outpost24](https://cybersectools.com/companies/outpost24). [SurfaceDiff](https://cybersectools.com/tools/surfacediff) is a commercial [external attack surface management](https://cybersectools.com/categories/external-asm) solution by [SurfaceDiff](https://cybersectools.com/companies/surfacediff). 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 | | Outpost24 External Attack Surface Management | SurfaceDiff | |---|---|---| | 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 | Startup, SMB, Mid-Market, Enterprise | | Company | Outpost24 | SurfaceDiff | | Headquarters | – | – | ### Use cases and capabilities | | Outpost24 External Attack Surface Management | SurfaceDiff | |---|---|---| | Dark Web Monitoring | Yes | – | | DNS Security | – | Yes | | Port Scanning | – | Yes | | TLS | – | Yes | | Subdomain Enumeration | – | Yes | | Network Scanning | – | Yes | | Security Scanning | – | Yes | | Alerting | – | Yes | | Reconnaissance | – | Yes | | Visibility | – | Yes | | Web Security | – | Yes | ### Core features **Outpost24 External Attack Surface Management** 10 features listed. Sign in on the page to see them. **SurfaceDiff** 9 features listed. Sign in on the page to see them. ## Which one fits you Based on what each listing shows: deployment, company size, price and open source. - [SurfaceDiff](https://cybersectools.com/tools/surfacediff) fits if you are a startup. ## Outpost24 External Attack Surface Management vs SurfaceDiff FAQ Common questions when comparing Outpost24 External Attack Surface Management vs SurfaceDiff for external attack surface management. ### What is the difference between Outpost24 External Attack Surface Management and SurfaceDiff? **Outpost24 External Attack Surface Management**: Cloud platform for continuous visibility & mgmt of external attack surfaces, built by Outpost24. **SurfaceDiff**: Continuous external attack surface monitoring that shows what changed between scans, built by SurfaceDiff. The table above shows where their features, integrations, deployment and company size fit differ. ### Who makes Outpost24 External Attack Surface Management and SurfaceDiff? **Outpost24 External Attack Surface Management** is made by Outpost24. **SurfaceDiff** is made by SurfaceDiff. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit. ### Is Outpost24 External Attack Surface Management a good alternative to SurfaceDiff? Often, yes. Outpost24 External Attack Surface Management and SurfaceDiff are both External Attack Surface Management products. Use the table above to see where features, deployment and company size fit differ. ## Related comparisons - [Outpost24 External Attack Surface Management vs DDactic Attack Surface Discovery](https://cybersectools.com/compare/ddactic-attack-surface-discovery-vs-outpost24-external-attack-surface-management) - [Outpost24 External Attack Surface Management vs Attack Surface Scan](https://cybersectools.com/compare/attack-surface-scan-vs-outpost24-external-attack-surface-management) - [Outpost24 External Attack Surface Management vs Trickest ASM - Attack Surface Management](https://cybersectools.com/compare/outpost24-external-attack-surface-management-vs-trickest-asm-attack-surface-management) - [SurfaceDiff vs DDactic Attack Surface Discovery](https://cybersectools.com/compare/ddactic-attack-surface-discovery-vs-surfacediff) - [SurfaceDiff vs Attack Surface Scan](https://cybersectools.com/compare/attack-surface-scan-vs-surfacediff) - [SurfaceDiff vs Trickest ASM - Attack Surface Management](https://cybersectools.com/compare/surfacediff-vs-trickest-asm-attack-surface-management) ## Alternatives to each - [See all Outpost24 External Attack Surface Management alternatives](https://cybersectools.com/alternatives/outpost24-external-attack-surface-management) - [See all SurfaceDiff alternatives](https://cybersectools.com/alternatives/surfacediff) --- Source: https://cybersectools.com/compare/outpost24-external-attack-surface-management-vs-surfacediff For AI agents: each product above has its own Markdown page (add .md to its URL, for example https://cybersectools.com/tools/outpost24-external-attack-surface-management.md). Every CybersecTools shortlist is listed at https://cybersectools.com/shortlists.md. More on Outpost24 External Attack Surface Management and SurfaceDiff: 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