# Data Theorem API Security vs Vulneri ASM: side-by-side comparison (2026) [Data Theorem API Security](https://cybersectools.com/tools/data-theorem-api-security) is a commercial [API security](https://cybersectools.com/categories/api-security) solution by [Data Theorem](https://cybersectools.com/companies/data-theorem). [Vulneri ASM](https://cybersectools.com/tools/vulneri-asm-attack-surface-management) is a commercial [external attack surface management](https://cybersectools.com/categories/external-asm) solution by [Vulneri](https://cybersectools.com/companies/vulneri). Features, integrations, deployment and the company behind each one, side by side. Need the answer fast? [Best API Security Solutions for Business](https://cybersectools.com/shortlists/best-api-security-solutions) picks Akamai API Security, Salt Security Salt Collect, Cloudflare API Shield and 4 more. ## Side-by-side comparison | | Data Theorem API Security | Vulneri ASM | |---|---|---| | Pricing model | Commercial | Commercial | | Category | API Security | External Attack Surface Management | | Verified | No | No | | Deployment type | Hybrid | Cloud | | Company size fit | SMB, Mid-Market, Enterprise | SMB, Mid-Market, Enterprise | | Company | Data Theorem | Vulneri | | Headquarters | – | – | ### Use cases and capabilities | | Data Theorem API Security | Vulneri ASM | |---|---|---| | Bot Protection | Yes | – | | DAST | Yes | – | | Attack Paths | – | Yes | | Vulnerability Prioritization | – | Yes | | Misconfiguration | – | Yes | | Reconnaissance | – | Yes | | Network Discovery | – | Yes | | Visibility | – | Yes | | Security Reporting | – | Yes | | Inventory | – | Yes | | Third Party Security | – | Yes | | Vulnerability | – | Yes | ### Core features **Data Theorem API Security** 10 features listed. Sign in on the page to see them. **Vulneri ASM** 10 features listed. Sign in on the page to see them. ### Integrations **Data Theorem API Security** 13 integrations listed. Sign in on the page to see them. **Vulneri ASM** No integrations listed. ## Which one fits you Based on what each listing shows: deployment, company size, price and open source. - [Data Theorem API Security](https://cybersectools.com/tools/data-theorem-api-security) fits if you need both cloud and on-premises options. - [Vulneri ASM](https://cybersectools.com/tools/vulneri-asm-attack-surface-management) fits if you want a cloud product. ## Data Theorem API Security vs Vulneri ASM FAQ Common questions when comparing Data Theorem API Security vs Vulneri ASM for API security. ### What is the difference between Data Theorem API Security and Vulneri ASM? **Data Theorem API Security**: API security platform for discovery, testing, and runtime protection. Built by Data Theorem. **Vulneri ASM**: ASM platform for continuous discovery and risk validation of internet-exposed assets. Built by Vulneri. The table above shows where their features, integrations, deployment and company size fit differ. ### Who makes Data Theorem API Security and Vulneri ASM? **Data Theorem API Security** is made by Data Theorem. **Vulneri ASM** is made by Vulneri. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit. ### Is Data Theorem API Security a good alternative to Vulneri ASM? In part. Data Theorem API Security and Vulneri ASM are not in the same category on CybersecTools. Use the table above to see where features, deployment and company size fit differ. ## Related comparisons - [Data Theorem API Security vs Indusface AppTrana - API Protection](https://cybersectools.com/compare/data-theorem-api-security-vs-indusface-apptrana-api-protection) - [Data Theorem API Security vs Orca API Security](https://cybersectools.com/compare/data-theorem-api-security-vs-orca-api-security) - [Data Theorem API Security vs Operant AI API Threat Protection](https://cybersectools.com/compare/data-theorem-api-security-vs-operant-ai-api-threat-protection) - [Vulneri ASM vs Indusface AppTrana - API Protection](https://cybersectools.com/compare/indusface-apptrana-api-protection-vs-vulneri-asm-attack-surface-management) - [Vulneri ASM vs Orca API Security](https://cybersectools.com/compare/orca-api-security-vs-vulneri-asm-attack-surface-management) - [Vulneri ASM vs Operant AI API Threat Protection](https://cybersectools.com/compare/operant-ai-api-threat-protection-vs-vulneri-asm-attack-surface-management) ## Alternatives to each - [See all Data Theorem API Security alternatives](https://cybersectools.com/alternatives/data-theorem-api-security) - [See all Vulneri ASM alternatives](https://cybersectools.com/alternatives/vulneri-asm-attack-surface-management) --- Source: https://cybersectools.com/compare/data-theorem-api-security-vs-vulneri-asm-attack-surface-management 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/data-theorem-api-security.md). Every CybersecTools shortlist is listed at https://cybersectools.com/shortlists.md. More on Data Theorem API Security and Vulneri ASM: 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