# Upstream Fusion API Security Upstream Fusion API Security is an API Security product by Upstream. It runs in the cloud or on-premises (hybrid). Pricing is commercial (contact sales). API security platform for automotive, mobility & transportation industries Listed January 2026. ## What is Upstream Fusion API Security? Upstream Fusion API Security is an API security platform designed for automotive, mobility, and transportation industries. The platform uses a proprietary live digital twin technology to analyze API traffic and provide contextual and operational analysis beyond OWASP API Security Top 10 coverage. The platform processes billions of monthly API transactions and offers flexible SaaS or private cloud deployment options. It ingests API traffic, API documentation, and operational logs to discover and catalog all API endpoints, including undocumented, shadow, and zombie APIs. The system performs automated endpoint and parameter learning, data classification, and structural analysis to maintain a continuously updated API inventory. The platform incorporates Ocean AI, which includes machine learning, generative AI, and agentic AI capabilities. ML-powered detection identifies low-and-slow attacks, complex attack patterns, and unknown risks through stateful behavioral analysis. The system detects OWASP Top 10 vulnerabilities, misconfigurations, business-logic abuse, enumeration, and fraud attempts. A no-code detection builder allows customization of detection logic. GenAI tools enable natural language querying for investigations and threat hunting, providing transaction history and cross-entity correlation. Agentic AI capabilities support automated response across large-scale threats. The platform maintains full transaction history and behavioral baselines to reconstruct event chains across APIs, sessions, and consumers. The platform integrates with existing enforcement points such as gateways, WAFs, and service meshes without impacting application latency. It connects with external systems to support automated or analyst-driven remediation actions including blocking consumers, revoking tokens, and adjusting rate limits. Tags: Anomaly Detection ## Where it fits in your security program (NIST CSF 2.0) - [Identify](https://cybersectools.com/guides/building-identify-program-small-team): helps you know your assets and your risks. - [Detect](https://cybersectools.com/guides/building-detect-program-small-team): helps you spot attacks and unusual activity. - [Respond](https://cybersectools.com/guides/building-respond-program-small-team): helps you contain and handle incidents. ## Quick facts - Category: [Application Security](https://cybersectools.com/categories/application-security) ยท [API Security](https://cybersectools.com/categories/api-security) - Vendor: [Upstream](https://cybersectools.com/companies/upstream-security) - Deployment: Hybrid - Company size fit: Mid-Market, Enterprise - Pricing model: Commercial (contact sales) - Features: 10 listed - Integrations: 4 listed - Website: upstream.auto The full feature and integration lists are on the page for signed-in visitors. ## Where it ranks Upstream Fusion API Security is not a pick on the current [Best API Security Solutions for Business](https://cybersectools.com/shortlists/best-api-security-solutions). ## Upstream Fusion API Security FAQ ### What is Upstream Fusion API Security? Upstream Fusion API Security is a product by Upstream in the API Security category. It covers Anomaly Detection. ### What is the pricing for Upstream Fusion API Security? Upstream Fusion API Security is a commercial product. For pricing, visit https://upstream.auto/platform/api-security/ or contact Upstream. ### What are alternatives to Upstream Fusion API Security? Alternatives to Upstream Fusion API Security listed on CybersecTools: 1. [Akamai API Security](https://cybersectools.com/tools/akamai-api-security) - API security platform for discovery, testing, and protection of APIs (Commercial) 2. [Imperva API Security](https://cybersectools.com/tools/imperva-api-security) - Unified API security platform for discovery, risk assessment, and mitigation (Commercial) 3. [Levo Runtime Application Security](https://cybersectools.com/tools/levo-runtime-application-security) - Runtime application security platform for API and AI stack protection (Commercial) 4. [Ammune API Discovery](https://cybersectools.com/tools/ammune-api-discovery) - API security platform with discovery, WAF, bot protection, and DDoS defense (Commercial) 5. [Operant AI API Threat Protection](https://cybersectools.com/tools/operant-ai-api-threat-protection) - Runtime API threat protection for Kubernetes environments with discovery (Commercial) Compare all Upstream Fusion API Security alternatives at [https://cybersectools.com/alternatives/upstream-fusion-api-security](https://cybersectools.com/alternatives/upstream-fusion-api-security) ### What deployment and organization size does Upstream Fusion API Security fit? Upstream Fusion API Security is available as hybrid. It is listed for mid-market and enterprise organizations. Pricing is commercial. Ask Upstream for pricing and support terms. ## Compare Upstream Fusion API Security with similar solutions - [Upstream Fusion API Security vs Akamai API Security](https://cybersectools.com/compare/akamai-api-security-vs-upstream-fusion-api-security) - [Upstream Fusion API Security vs Imperva API Security](https://cybersectools.com/compare/imperva-api-security-vs-upstream-fusion-api-security) - [Upstream Fusion API Security vs Levo Runtime Application Security](https://cybersectools.com/compare/levo-runtime-application-security-vs-upstream-fusion-api-security) All alternatives to Upstream Fusion API Security: [/alternatives/upstream-fusion-api-security](https://cybersectools.com/alternatives/upstream-fusion-api-security) --- Source: https://cybersectools.com/tools/upstream-fusion-api-security For AI agents: every CybersecTools shortlist is listed at https://cybersectools.com/shortlists.md, and any compare page has a Markdown copy too (add .md to its URL). More on Upstream Fusion API Security and Upstream: 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=product-md