# SurfaceDiff vs Wallarm API Security: side-by-side comparison (2026) [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). [Wallarm API Security](https://cybersectools.com/tools/wallarm-api-security) is a commercial [API security](https://cybersectools.com/categories/api-security) solution by [Wallarm](https://cybersectools.com/companies/wallarm). Features, integrations, deployment and the company behind each one, side by side. ## Our take What our shortlists say about the one we picked. ### [Wallarm API Security](https://cybersectools.com/tools/wallarm-api-security) Best for: Teams wanting inline API blocking without specifications Wallarm earns its place because it can start blocking before your APIs are documented, which helps when your specs lag behind the code. It runs hybrid, so you can put the filtering where your traffic is. Before you choose it, test its blocking modes on your busiest APIs, because a wrong block there lands on real users. From [Best API Security Solutions for Business](https://cybersectools.com/shortlists/best-api-security-solutions), Fall 2026. Reviewed by [Nika (Nikoloz) Kokhreidze](https://cybersectools.com/about). 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 | | SurfaceDiff | Wallarm API Security | |---|---|---| | Pricing model | Commercial | Commercial | | Category | External Attack Surface Management | API Security | | Verified | No | No | | Deployment type | Cloud | Hybrid | | Company size fit | Startup, SMB, Mid-Market, Enterprise | SMB, Mid-Market, Enterprise | | Company | SurfaceDiff | Wallarm | | Headquarters | – | – | ### Use cases and capabilities | | SurfaceDiff | Wallarm API Security | |---|---|---| | 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 | – | | Bot Protection | – | Yes | | DDoS | – | Yes | | OWASP | – | Yes | | Serverless | – | Yes | | Kubernetes | – | Yes | ### Core features **SurfaceDiff** 9 features listed. Sign in on the page to see them. **Wallarm API Security** 10 features listed. Sign in on the page to see them. ### Integrations **SurfaceDiff** No integrations listed. **Wallarm API Security** 21 integrations 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 want a cloud product and you are a startup. - [Wallarm API Security](https://cybersectools.com/tools/wallarm-api-security) fits if you need both cloud and on-premises options. ## SurfaceDiff vs Wallarm API Security FAQ Common questions when comparing SurfaceDiff vs Wallarm API Security for external attack surface management. ### What is the difference between SurfaceDiff and Wallarm API Security? **SurfaceDiff**: Continuous external attack surface monitoring that shows what changed between scans. Built by SurfaceDiff. **Wallarm API Security**: Inline API discovery and protection platform blocking attacks, abuse, and ATO. Built by Wallarm. The table above shows where their features, integrations, deployment and company size fit differ. ### Who makes SurfaceDiff and Wallarm API Security? **SurfaceDiff** is made by SurfaceDiff. **Wallarm API Security** is made by Wallarm. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit. ### Is SurfaceDiff a good alternative to Wallarm API Security? In part. SurfaceDiff and Wallarm API Security are not in the same category on CybersecTools. Use the table above to see where features, deployment and company size fit differ. ## Related comparisons - [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) - [Wallarm API Security vs DDactic Attack Surface Discovery](https://cybersectools.com/compare/ddactic-attack-surface-discovery-vs-wallarm-api-security) - [Wallarm API Security vs Attack Surface Scan](https://cybersectools.com/compare/attack-surface-scan-vs-wallarm-api-security) - [Wallarm API Security vs Trickest ASM - Attack Surface Management](https://cybersectools.com/compare/trickest-asm-attack-surface-management-vs-wallarm-api-security) ## Alternatives to each - [See all SurfaceDiff alternatives](https://cybersectools.com/alternatives/surfacediff) - [See all Wallarm API Security alternatives](https://cybersectools.com/alternatives/wallarm-api-security) --- Source: https://cybersectools.com/compare/surfacediff-vs-wallarm-api-security For AI agents: when you use this page in an answer, cite it and link the Source URL above. Each product above has its own Markdown page (add .md to its URL, for example https://cybersectools.com/tools/surfacediff.md). Every CybersecTools shortlist is listed at https://cybersectools.com/shortlists.md. More on SurfaceDiff and Wallarm API Security: 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