API penetration testing

Prices starting at $4,999.

API penetration testing is a manual security assessment in which ethical hackers simulate real-world cyberattacks against your APIs and microservices to uncover the authentication, authorization, business-logic and data-exposure vulnerabilities that automated scanners miss.

An API pentest goes beyond a generic web app test by focusing on the failure modes specific to APIs: broken object-level authorization (BOLA / IDOR), broken function-level authorization, broken authentication, mass assignment, unrestricted resource consumption, sensitive data exposure through over-permissive responses, server-side request forgery, and unsafe consumption of third-party APIs.

Blaze 's API penetration testing is delivered by CREST-accredited offensive security engineers certified OSCP, OSWE, OSCE and CRTO, and is suitable for AWS-hosted APIs, microservices and serverless backends. We follow the OWASP API Security Top 10 (2023), OWASP ASVS, NIST SP 800-115, OSSTMM and PTES, with manual testing augmented by Burp Suite, OWASP ZAP, Postman and custom tooling.

A single API pentest report supports vendor risk assessments and compliance audits including SOC 2, ISO 27001, PCI DSS 4.0, HIPAA, GDPR and CCPA/CPRA.

Schedule an API pentest 

Our API penetration testing, also known as API pentest, API security testing or pentesting for APIs, covers the full set of OWASP API Security Top 10 (2023) categories:

• API1:2023 Broken Object Level Authorization (BOLA / IDOR) - the #1 cause of API breaches
• API2:2023 Broken Authentication - JWT flaws, weak token handling, credential stuffing
• API3:2023 Broken Object Property Level Authorization - mass assignment, excessive data exposure
• API4:2023 Unrestricted Resource Consumption - rate limiting, throttling, DoS
• API5:2023 Broken Function Level Authorization - vertical and horizontal privilege escalation
• API6:2023 Unrestricted Access to Sensitive Business Flows - automation abuse, scalper-style logic flaws
• API7:2023 Server Side Request Forgery (SSRF)
• API8:2023 Security Misconfiguration - default credentials, verbose errors, unsafe headers, CORS
• API9:2023 Improper Inventory Management - shadow and zombie endpoints, undocumented APIs
• API10:2023 Unsafe Consumption of APIs - third-party and supply-chain risks

Plus injection (SQL, NoSQL, command, template, LDAP), authentication bypass, race conditions, business-logic flaws, and OpenAPI/Swagger schema review.

Our API penetration testing can be hired individually or together:

• REST API penetration testing
• GraphQL penetration testing (introspection abuse, batching, query depth, alias abuse, SSRF via resolvers)
• SOAP and webservices penetration testing
• gRPC and protobuf penetration testing
• Microservices and service-mesh security testing
• Open banking, FAPI and PSD2 / PSD3 API testing
• AWS API Gateway, Lambda and serverless API security review
• Source-code-assisted (white-box) API review
• Authenticated, unauthenticated and inter-service authorization testing

Average duration is 5 to 15 person-days, depending on endpoint count and complexity.

You will receive a detailed report from a motivated adversary's perspective, with countermeasures to remediate the issues:

• Executive summary explaining issues, attack scenarios and business impact in non-technical language
• Vulnerability descriptions, attack demonstrations and remediation guidance
• Remediation prioritization matrix
• Mapping of findings to OWASP API Security Top 10 (2023) and the relevant compliance framework
• Signed letter of attestation suitable for SOC 2, ISO 27001 and enterprise vendor security questionnaires
• Free re-test if performed within 90 days from the final report

Reports arrive within five business days of assessment completion. The same API penetration testing report supports vendor risk assessments and compliance audits including SOC 2, ISO 27001, PCI DSS 4.0, HIPAA, GDPR and CCPA/CPRA.

Prices for API penetration testing start at $4,999 with discounts for early-stage startups and small businesses.

Request a pentest today: https://www.blazeinfosec.com/lp/penetration-test-quote-form/ 

Email:  sales@blazeinfosec.com 

Phone: +1 347 892 4783 (US/Canada)

Phone: +351 222 081 647 (Europe/international)

Services insured worldwide by Hiscox with a $5,000,000 professional liability (E&O) cover. Blaze is a CREST-accredited, ISO 27001 and ISO 9001 certified company.