API Security
Pentesting
Modern applications depend on APIs — and attackers do too. EntrySec evaluates your API ecosystem with deep manual exploitation that uncovers vulnerabilities scanners consistently miss. We assess authentication, authorization, JWT/OAuth flows, injection flaws, business logic abuse, and multi-tenant data isolation to reveal real-world attack paths before adversaries find them.
- Deep manual API exploitation that goes far beyond automated scanners
- Full coverage of OWASP API Top 10 and complex multi-step attack chains
- Real-world validation of BOLA, BFLA, IDOR, mass assignment, and rate-limit bypass
- Every issue includes proof-of-exploitation and precise remediation guidance
Phase 01
API Recon & Endpoint Enumeration
We discover REST, GraphQL, WebSocket, and undocumented endpoints to map the full attack surface.
Phase 02
Authentication & Token Analysis
We scrutinize JWT/OAuth flows, token lifecycle, session management, and credential handling weaknesses.
Phase 03
Authorization & Object-Level Abuse
We validate BOLA, BFLA, IDOR, mass assignment, and multi-tenant isolation flaws under real attack conditions.
Phase 04
Injection & Data Layer Attacks
We test for JSON/GraphQL injection, SQLi/NoSQLi, command injection, and unsafe deserialization paths.
Phase 05
Business Logic & Abuse Cases
We simulate rate-limit bypass, replay attacks, workflow abuse, and financial/state-machine manipulation.
Phase 06
Reporting, Remediation & Retesting
Executive and technical reporting, clear remediation plans, and complimentary retesting of fixes.
Penetration Testing Aligned with Industry Standards
EntrySec engagements are mapped to OWASP, SANS and NIST so your engineering and compliance teams can interpret results using the same language as modern security frameworks.
Everything You Need for Compliance
EntrySec penetration testing reports are structured so they can be reused for ISO 27001, SOC 2, PCI DSS, GDPR, HIPAA and other assurance frameworks, helping you demonstrate real security maturity to auditors, customers and regulators.
OWASP TOP 10
SANS CWE TOP 25
NIST FRAMEWORK
GDPR
SOC 2
ISO 27001
HIPAA
PCIWhy EntrySec is #1
EntrySec is led by elite API security engineers specialized in breaking complex authentication flows, trust boundaries, and authorization layers across REST, GraphQL, Webhooks, and microservice APIs. Our methodology targets the real weak points that automated scanners never identify: broken object-level authorization, token mismanagement, business logic abuse, and insecure integrations between distributed systems. Through adversarial testing, abuse-case modeling, and protocol-level exploitation, we simulate how real attackers pivot through your API ecosystem, uncovering the flaws that expose sensitive data, user accounts, and backend infrastructure.
Senior API penetration testers. Experts in OAuth2, JWT, mTLS, microservices, and distributed architecture abuse.
Manual, logic-driven exploitation. Identification of BOLA/BFLA, trust violations, and multi-step API attack chains.
Break real-world authentication flows. Misuse of tokens, sessions, SSO, third-party integrations, and privilege escalation.
Engineering-ready remediation. Clear fixes aligned with OWASP API Top 10, Zero-Trust, and secure API architecture.
Full coverage of modern API ecosystems. REST, GraphQL, gRPC, async APIs, S2S integrations, queues, and event-driven systems.
Critical API vulnerabilities we uncover
Industry-Leading Tools Applied Throughout Our API Penetration Tests
Pentesting Deliverables
Comprehensive, actionable, and professionally prepared documentation to support your security assessment.
Report
Comprehensive, detailed, and easy-to-understand pentesting reports
Fix Recommendations
Effective, actionable remediation steps to assist you in addressing the identified findings
Slack Channel
We'll be accessible anytime through a shared Slack channel with your team
Free Retesting
Your first retesting is included as part of the pentesting package.
Attestation Letter
A professionally prepared document that verifies the completion of pentesting
Technical Presentation
Detailed presentations designed for your technical teams to discuss pentest results
By The Numbers
98%
OWASP Top 10 coverage
1000+
Applications tested
35+
Enterprises served
300+
Security checks
Frequently asked questions
Clear answers to the most common questions about our penetration testing services and engagement process with your engineering and security teams.
A penetration testing service simulates real-world cyberattacks against your applications, APIs, cloud, and infrastructure. The goal is to safely identify vulnerabilities before attackers do and provide clear, prioritized guidance so your team can fix issues and strengthen your overall security posture.
Penetration testing uncovers critical weaknesses, reduces the likelihood of data breaches, and limits potential financial or reputational damage. It validates security controls, supports compliance with standards such as ISO 27001 and SOC 2, and demonstrates due diligence to customers, partners, and auditors.
The cost depends on scope and complexity: number of applications, APIs, and environments, as well as authentication flows, roles, and integrations. We provide transparent, fixed-fee proposals so you know exactly what is included—no hidden add-ons or surprise charges once the test begins.
Yes. We tailor each engagement to your stack and risk profile. Share a high-level overview of your applications, APIs, infrastructure, and compliance drivers, and we’ll prepare a custom testing plan and quote aligned with your objectives and budget.
Absolutely. Our testing methodology and reporting can be mapped to major frameworks like PCI DSS, HIPAA, SOC 2, ISO 27001, and GDPR. We highlight control gaps, provide evidence you can share with auditors, and include remediation guidance that supports your certification or audit efforts.
Timelines depend on scope, but most projects deliver a full report within 7–15 business days after testing finishes. During the engagement you’ll receive early visibility into critical issues, and once the report is delivered we walk you through findings, answer questions, and provide practical remediation advice.
No. We include at least one full round of retesting at no additional cost. Once you’ve deployed fixes, we revalidate the vulnerabilities, update the report with the new status, and confirm that the risks have been properly addressed.
Pricing is based on clear scoping parameters: type of assessment (web, API, mobile, internal, cloud), number and size of assets, level of access, and any special requirements like out-of-hours testing. We keep the model simple and predictable so you can easily budget and compare options.
Yes. We offer an initial consultation at no cost to understand your environment, objectives, and compliance requirements. From there we recommend an appropriate scope, outline timelines, and answer any questions you have about methodology or reporting.
We are here to support your business
Speak directly with our senior security experts — we’ll help you define goals, timelines, and actionable steps.