Top 10 Best API Penetration Testing Companies In 2025

API penetration testing has evolved dramatically in 2025. While traditional, human-led penetration testing remains critical, the scale and complexity of modern APIs have necessitated a new approach.

The companies on this list are not just offering one-time testing services; they provide automated, continuous, and intelligent API security platforms that perform dynamic testing, behavioral analysis, and real-time protection, effectively acting as an automated penetration test that runs 24/7.

These platforms are designed to “shift security left” into the development pipeline and protect APIs in production.

Why We Choose These Companies

The rise of a “platform-first” approach to API security is a response to the limitations of traditional testing. The sheer volume and frequent updates of APIs mean that a yearly or quarterly human-led test is no longer sufficient.

The top companies in this space for 2025 have embraced automation, machine learning, and continuous discovery to provide security that keeps pace with development.

They blend proactive testing (like DAST) with runtime protection (like WAF and behavioral analysis) to provide a comprehensive security posture.

How We Choose It

Our selection is based on the following criteria:

API-Specific Expertise: A deep focus on the unique risks of APIs, such as broken object-level authorization (BOLA) and business logic abuse, as outlined in the OWASP API Security Top 10.

Automation & Continuous Testing: The ability to automatically discover APIs and continuously test them for vulnerabilities without manual intervention.

Runtime Protection: The integration of real-time monitoring and protection against live attacks.

“Shift-Left” Capabilities: Tools that integrate with development workflows to find and fix issues before they reach production.

Market Leadership & Trust: Recognition from industry analysts and a proven track record with enterprise clients.

Comparison Of Key Features (2025)

Company	Automated Discovery	DAST Capabilities	Runtime Protection	Shift-Left Integration
Salt Security	✅ Yes	✅ Yes	✅ Yes	✅ Yes
Noname Security	✅ Yes	✅ Yes	✅ Yes	✅ Yes
Traceable	✅ Yes	✅ Yes	✅ Yes	✅ Yes
Cequence Security	✅ Yes	✅ Yes	✅ Yes	✅ Yes
42Crunch	✅ Yes	✅ Yes	✅ Yes	✅ Yes
Wallarm	✅ Yes	✅ Yes	✅ Yes	✅ Yes
APIsec	✅ Yes	✅ Yes	✅ Yes	✅ Yes
Invicti (Netsparker)	✅ Yes	✅ Yes	❌ No	✅ Yes
F5 (WAAP)	✅ Yes	✅ Yes	✅ Yes	✅ Yes
Imperva	✅ Yes	✅ Yes	✅ Yes	❌ No

1. Salt Security

Salt Security is a market leader known for its agentless, AI-powered API security platform. The company specializes in continuously discovering APIs and using machine learning to create a baseline of normal behavior.

By detecting deviations from this baseline, the platform can identify complex vulnerabilities, including business logic flaws, that traditional tools miss.

Salt’s platform provides deep, contextual insights that effectively act as a continuous, automated penetration test.

Why You Want to Buy It:

Salt’s behavioral analysis is its key differentiator. It’s designed to find and block sophisticated attacks that bypass standard security controls, giving security teams a proactive defense against even the most subtle threats.

Feature	Yes/No	Specification
Automated Discovery	✅ Yes	Discovers all APIs in real-time, including shadow APIs.
DAST Capabilities	✅ Yes	Probes and tests for vulnerabilities in live traffic.
Runtime Protection	✅ Yes	Blocks malicious activity and business logic attacks.
Shift-Left Integration	✅ Yes	Identifies and remediates issues in pre-production.

Best For: Large enterprises that need a powerful, automated, and context-aware solution to protect a high volume of complex APIs.

Try Salt Security here → Salt Security Official Website

2. Noname Security

Noname Security offers a comprehensive API security platform that combines discovery, posture management, runtime protection, and API security testing.

Their platform provides a single-pane-of-glass view of the entire API attack surface.

A core strength is its proactive vulnerability detection, which uses AI to analyze API traffic and discover flaws before they can be exploited.

This makes it a powerful tool for continuous, automated penetration testing.

Why You Want to Buy It:

Noname’s platform is highly versatile, providing both in-depth testing and robust runtime protection from a single dashboard.

Its “active testing” capability allows security teams to run automated tests that simulate attacker reconnaissance, making it a strong choice for proactive security.

Feature	Yes/No	Specification
Automated Discovery	✅ Yes	Provides a comprehensive API inventory.
DAST Capabilities	✅ Yes	Offers active testing for pre-production environments.
Runtime Protection	✅ Yes	Uses behavioral analytics to block real-time threats.
Shift-Left Integration	✅ Yes	Integrates with CI/CD pipelines to find flaws early.

Best For: Organizations that need a full-lifecycle API security platform that seamlessly integrates with their existing security and DevOps tools.

Try Noname Security here → Noname Security Official Website

3. Traceable

Traceable is an API security platform that uses distributed tracing to provide unparalleled visibility into API behavior and data flow.

By analyzing every API transaction, Traceable builds a deep, contextual understanding of each API, which allows it to detect and block complex threats like business logic abuse and data exfiltration.

Its platform is designed to help security teams prioritize the most critical risks and perform automated testing.

Why You Want to Buy It:

Traceable’s unique use of distributed tracing gives it a significant advantage in understanding the flow of data across an application.

This allows it to discover and protect sensitive data in transit and to identify threats that span multiple API calls.

Feature	Yes/No	Specification
Automated Discovery	✅ Yes	Provides continuous discovery of all APIs.
DAST Capabilities	✅ Yes	Offers context-based API security testing.
Runtime Protection	✅ Yes	Detects and blocks business logic flaws in real-time.
Shift-Left Integration	✅ Yes	Integrates with DevOps and API gateways.

Best For: Enterprises with complex, multi-service architectures that need deep visibility and context-aware security to protect their APIs.

Try Traceable here → Traceable AI Official Website

4. Cequence Security

Cequence Security offers a unified API Protection platform that combines discovery, risk assessment, and runtime protection.

Its key innovation is its “Intelligent Mode” which uses AI to create autonomous security test plans from OpenAPI specifications.

The platform’s ability to find coding errors, misconfigurations, and vulnerabilities in both pre-production and runtime environments makes it a highly effective tool for continuous penetration testing.

Why You Want to Buy It:

Cequence’s platform is a powerful blend of discovery, testing, and protection.

Its unique ability to auto-generate security test plans simplifies the security testing process, making it highly efficient for both development and security teams.

Feature	Yes/No	Specification
Automated Discovery	✅ Yes	Discovers and catalogs all APIs in the environment.
DAST Capabilities	✅ Yes	Autonomous test creation from OpenAPI specs.
Runtime Protection	✅ Yes	Provides real-time WAF and bot mitigation.
Shift-Left Integration	✅ Yes	Integrates with CI/CD pipelines for early testing.

Best For: Organizations that want to unify multiple API security tools into a single platform that can protect against bots, fraud, and API-specific attacks.

Try Cequence Security here → Cequence Security Official Website

5. 42Crunch

42Crunch is a developer-centric API security platform that emphasizes a “shift-left” approach.

It is built to integrate directly into the development workflow, enabling developers to find and fix vulnerabilities in OpenAPI specifications and code as they are being written.

The platform uses a combination of static analysis (API Audit) and dynamic testing (API Scan) to validate API security from the earliest stages of the software development lifecycle.

Why You Want to Buy It:

42Crunch’s focus on the API contract is a unique and powerful way to prevent vulnerabilities.

By enforcing security best practices at the design stage, it significantly reduces the number of issues that make it to production.

Feature	Yes/No	Specification
Automated Discovery	✅ Yes	Scans repositories for OpenAPI definitions.
DAST Capabilities	✅ Yes	Offers dynamic, live API scanning with rich context.
Runtime Protection	✅ Yes	Can be used with gateways for runtime protection.
Shift-Left Integration	✅ Yes	Deep integration with IDEs and CI/CD tools.

Best For: DevOps and DevSecOps teams that want to embed security into their CI/CD pipelines and empower developers to build secure APIs from the start.

Try 42Crunch here → 42Crunch Official Website

6. Wallarm

Wallarm is an API security platform that provides full-stack protection from a single agent. It combines WAF, API security, and bot mitigation into a unified solution.

Wallarm’s platform automatically discovers APIs, analyzes their behavior, and protects them from a wide range of attacks, including the OWASP API Security Top 10.

Its active threat verification capabilities perform dynamic testing to confirm vulnerabilities and prioritize them for remediation.

Why You Want to Buy It:

Wallarm’s ability to combine WAF, bot, and API security into a single, unified platform simplifies security management.

It’s a great choice for companies that want to streamline their security stack and gain comprehensive visibility and control.

Feature	Yes/No	Specification
Automated Discovery	✅ Yes	Continuously maps and discovers APIs.
DAST Capabilities	✅ Yes	Actively probes APIs to verify vulnerabilities.
Runtime Protection	✅ Yes	Provides real-time WAF, bot, and API protection.
Shift-Left Integration	✅ Yes	Integrates with CI/CD for early testing.

Best For: Organizations that need to consolidate multiple security tools into a single platform for web and API protection, with a strong focus on risk analysis and threat prevention.

Try Wallarm here → Wallarm Official Website

7. APIsec

APIsec offers an automated API penetration testing platform designed to run in CI/CD pipelines.

It goes beyond simple scanning by using an “API Attacker” to automatically generate thousands of attack scenarios, including those for business logic flaws and OWASP API Top 10 vulnerabilities.

Its “zero-touch” deployment model means it can run tests without requiring source code access, making it a highly efficient and scalable tool for developers and security teams alike.

Why You Want to Buy It:

APIsec’s core mission is to automate the work of a penetration tester.

It is a powerful platform for companies that want to perform frequent and thorough security testing without relying on resource-intensive manual engagements.

Feature	Yes/No	Specification
Automated Discovery	✅ Yes	Catalogs and maps API endpoints.
DAST Capabilities	✅ Yes	Automatically generates and executes thousands of attack scenarios.
Runtime Protection	✅ Yes	Provides runtime protection against threats.
Shift-Left Integration	✅ Yes	Designed for deep integration into CI/CD workflows.

Best For: DevSecOps teams that need a tool for continuous, automated penetration testing of APIs as part of their CI/CD pipeline.

Try APIsec here → APIsec Official Website

8. Invicti

Invicti is a leader in Dynamic Application Security Testing (DAST) and has extended its proven technology to APIs.

Its platform automatically crawls and tests APIs for vulnerabilities, with a key differentiator being its Proof-Based Scanning™, which automatically verifies detected vulnerabilities.

This feature eliminates false positives and provides actionable reports that are ready for immediate remediation by developers.

Why You Want to Buy It:

Invicti’s proof-based scanning is a powerful feature that gives security teams high confidence in their findings.

This allows them to automate vulnerability management and streamline communication with development teams, leading to faster remediation.

Feature	Yes/No	Specification
Automated Discovery	✅ Yes	Discovers and scans all APIs.
DAST Capabilities	✅ Yes	Proof-Based Scanning™ for accurate vulnerability detection.
Runtime Protection	❌ No	Primarily a testing platform, not for runtime protection.
Shift-Left Integration	✅ Yes	Integrates with CI/CD and bug-tracking tools.

Best For: Security teams that need a reliable, accurate, and scalable DAST platform for both web applications and APIs, with a focus on eliminating false positives.

Try Invicti here → Invicti Official Website

9. F5

F5, a leader in application delivery and security, offers a comprehensive API security solution through its Distributed Cloud WAAP (Web Application and API Protection).

This platform combines a next-gen WAF with API discovery, testing, and protection.

F5’s solution is known for its ability to enforce a positive security model based on learned or imported API specifications, providing robust protection against both known and unknown threats.

Why You Want to Buy It:

F5’s WAAP solution provides a powerful combination of threat intelligence and a positive security model.

It’s an excellent choice for organizations that want to consolidate their application and API security under a single, trusted vendor.

Feature	Yes/No	Specification
Automated Discovery	✅ Yes	Automatically discovers all APIs from code and traffic.
DAST Capabilities	✅ Yes	Targeted testing on discovered API endpoints.
Runtime Protection	✅ Yes	Provides a WAF and positive security model.
Shift-Left Integration	✅ Yes	Integrates with code repositories for early discovery.

Best For: Enterprises that need a unified platform for WAF and API security, leveraging F5’s global network and expertise in application delivery.

Try F5 API Security here → F5 Official Website

10. Imperva

Imperva, a long-standing leader in application security, offers a robust API security solution that integrates with its cloud WAF and bot management platforms.

Imperva API Security provides automatic discovery, classification, and continuous monitoring of APIs.

By analyzing traffic and leveraging a vast threat intelligence database, it can detect and block a wide range of attacks, from OWASP Top 10 vulnerabilities to API-specific business logic abuse.

Why You Want to Buy It:

Imperva’s solution provides a mature and trusted layer of protection for APIs.

Its integration with its core WAF and bot mitigation products simplifies security management and provides a unified view of application and API threats.

Feature	Yes/No	Specification
Automated Discovery	✅ Yes	Automatically discovers and catalogs all APIs.
DAST Capabilities	✅ Yes	Scans and tests for vulnerabilities.
Runtime Protection	✅ Yes	Provides WAF and API-specific attack blocking.
Shift-Left Integration	❌ No	Primarily focused on runtime protection.

Best For: Large enterprises that already use Imperva for their WAF or application security and want to extend that protection to their API portfolio.

Try Imperva API Security here → Imperva Official Website

Conclusion

In 2025, the best API “penetration testing” companies have moved beyond one-off, manual services to provide continuous, automated security platforms.

The leaders on this list are those that effectively blend proactive testing with real-time runtime protection.

For a powerful, AI-driven solution that provides deep behavioral analysis, Salt Security and Noname Security are the top choices.

If your organization is focused on a “shift-left” approach and wants to empower developers, 42Crunch and APIsec are excellent platforms.

Meanwhile, vendors like F5 and Imperva offer a unified approach that is ideal for companies that need to secure both web applications and APIs.

Ultimately, the right solution depends on your existing security stack, development practices, and the scale of your API landscape.