Secure Your APIs — Protect Data & Integrations

API
Penetration Testing

WhiteNet API Penetration Testing uncovers flaws in APIs and backend services that can lead to data breaches, unauthorized access, and business logic abuse. We test authentication, authorization, data handling, and rate-limiting to secure your API ecosystem end-to-end.

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API Penetration Testing

Identify and remediate API weaknesses before attackers exploit them.

APIs power modern applications — and they’re an attractive target for attackers. WhiteNet performs deep API security assessments to find authentication bypasses, authorization flaws, data leakage, and business-logic exploits that automated scans often miss.

Our API testing covers REST, GraphQL, gRPC, and other RPC paradigms. We combine automated discovery with manual, attacker-style testing to map endpoints, parameter handling, and backend logic to reveal critical risks.

Each finding is validated with proof-of-concept requests, impact analysis, and developer-focused remediation steps so fixes can be implemented quickly and correctly.

What We Test

From auth issues to business logic — full-scope API testing

Authentication & Session Management

Tests for broken or weak authentication flows, token misuse, session fixation, and improper token revocation.

Authorization & Access Control

Assesses horizontal and vertical privilege escalation, insecure direct object references (IDOR), and access-control bypasses.

Data Exposure & Sensitive Info

Searches for leaked PII, sensitive headers, metadata, verbose error messages, and improper response data filtering.

Advanced Attack Simulation

Realistic API attacks to surface hidden weaknesses

Rate Limiting & Abuse

Evaluates throttling, brute-force protections, and abuse-resistant design to prevent credential stuffing, scraping, and DoS.

Input Validation & Injection

Identifies SQL/NoSQL injection, command injection, header injection, and parameter pollution that can compromise backend systems.

Business Logic Testing

Discovers logic flaws that allow fund transfers, order tampering, or other flows to be abused in ways automation can't detect.

API Ecosystem & DevOps Integration

Secure your APIs across development, staging, and production

CI/CD & Pre-Release Testing

Integrate API security checks into your pipelines to catch regressions early and prevent vulnerabilities from reaching production.

Third-Party & Partner APIs

Assesses risks introduced by external integrations and validates trust boundaries between services.

Logging, Monitoring & Forensics

Checks that API events are logged correctly and that telemetry provides sufficient context for detection and incident response.

Key Outcomes

Eliminate API risks that threaten data, integrations, and business logic.

Discover Your API Attack Surface

Map public and private endpoints, hidden parameters, and undocumented behavior that attackers exploit.

Eliminate Authentication & Authorization Flaws

Fix token handling, session management, and access-control gaps that lead to account takeover or data leakage.

Protect Sensitive Data

Identify and remove exposures of PII, credentials, secrets, or business data returned by APIs.

Prevent Abuse & Rate-Limit Bypass

Ensure robust throttling, anti-automation, and abuse-resistant mechanisms to protect resources and reputation.

Integrate Security into DevOps

Embed API security into CI/CD so vulnerabilities are caught and fixed earlier in development.

Actionable, Developer-First Reporting

Receive PoC requests, impact assessments, and clear remediation steps developers can implement immediately.

Secure Your API Ecosystem

Don’t let insecure APIs expose your data or business logic. WhiteNet API Penetration Testing finds real risks and helps your team remediate them fast.

Request an API Security Assessment

Application & Network Security