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APIs Are Your Company’s Nerve Endings. We Try to Sever Them.

We simulate how attackers target your exposed API endpoints—probing for auth bypasses, data leaks, and logic flaws. No access. No assumptions. Just real-world testing to discover what’s vulnerable before it gets exploited.

APIs Are High-Value Targets. We Treat Them That Way.

APIs expose functionality, data, and system control—all without a user interface to hide behind. Cyber Guards approaches your APIs like an outsider would: trying to break the rules, bypass protections, and manipulate inputs. We discover vulnerabilities that traditional security checks and static tools often miss.

What We Discover

We manually test your APIs for vulnerabilities that attackers exploit in the wild:

Broken Authentication

token misuse, weak session management, insecure login flows

Authorization Bypass

 IDOR (Insecure Direct Object Reference), horizontal/vertical privilege escalation

Input Injection

SQLi, command injection, XML/XXE

Data Exposure

sensitive info in responses, verbose error messages, hidden fields

Logic Abuse

abusing intended flows for fraud, DoS, or manipulation

Rate Limit & Replay Attacks

brute-force or enumeration through unthrottled endpoints

REST, GraphQL, or SOAP—if it talks to the internet, we’ll try to break it.

How It Works

Reconnaissance

We map your API surface (documented + undocumented)

Testing

 We attempt to exploit vulnerabilities using real attacker techniques

Reporting

 You get a full breakdown of vulnerabilities, reproduction steps, and remediation guidance

Re-testing

We verify that your fixes are solid and the gaps are truly closed

Why API Pentesting Matters

APIs are fast to deploy, easy to overlook, and hard to secure. They often become the weakest link—not because they’re exposed, but because no one’s tried to break them properly. Until now.

We discover vulnerabilities that exist between endpoints and logic—not just within them.

What You Get

Manual API penetration testing by skilled ethical hackers
Endpoint-level findings with full context
Developer-ready reporting
Executive summaries for security or compliance teams
One round of free re-testing after fixes

Common Use Cases

  • SaaS platforms with exposed internal/external APIs
  • Products using GraphQL or token-based auth flows
  • Microservices and third-party integrations
  • Customer onboarding, payment, or user data workflows
  • Post-MVP or pre-audit validation
Let’s map your API risks—and test them like a real attacker would.
Let’s map your API risks—and test them like a real attacker would.