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• Independent penetration testing

Independent penetration testing for modern applications.

Manual web, API, network and cloud security testing for US SaaS and technology companies. Clear scope, validated findings, reports you can hand to engineers, customers and auditors.

Request a Security AssessmentView Sample Report

OWASP WSTG · ASVS · API Security Top 10 · CVSS · PTES where appropriate

CyberZ emblem: a pirate skull wearing a tricorne hat with crossed sabers and binary code, a red bandana and an eye patch marked with a Z, set on a circuit-board ring
Who we work with

Companies that need an independent test, not a security department.

US-based companies of roughly 20–250 people that run a web application or API, process customer data, sell to other businesses and are preparing for or maintaining SOC 2 — often with enterprise customers asking for security evidence and no large internal security team.

  • B2B SaaS
  • Technology
  • AI products
  • Fintech
  • Healthtech
  • Legaltech
  • Developer tools
  • Cloud-native
  • Startups & scaleups

Typical reasons to engage:

  • Annual security testing
  • Customer security requirements
  • SOC 2 evidence
  • PCI DSS evidence
  • Security questionnaires
  • Enterprise procurement
  • Vulnerability management
  • Release validation
Beyond scanners

Scanners find patterns. We find the flaws in how your application actually works.

We manually test authorization boundaries.

Roles, tenants and object-level access are exercised by hand — the class of flaw automated tools cannot reason about.

We test business logic that automated scanners often miss.

Workflow abuse, state manipulation, race conditions and entitlement bypasses are tested against how your product is meant to behave.

Every finding includes evidence, impact and remediation guidance.

Reproduction steps, requests and responses, technical and business impact, CVSS, and a fix your engineers can implement.

Services

What we test.

All services
SVC-01

Web Application Pentesting

Manual, scope-driven testing of authentication, authorization, session handling, business logic and injection classes in modern web applications and single-page apps.

Learn more SVC-02

API Pentesting

Manual testing of REST and GraphQL APIs for object- and function-level authorization, token handling, mass assignment, excessive data exposure and API abuse.

Learn more SVC-03

Network Pentesting

External testing of your internet-facing attack surface and internal testing of your corporate or production network, including Active Directory where applicable.

Learn more SVC-04

Cloud Security

Assessment of cloud identity and access, public exposure, storage, network configuration and secrets handling across AWS, Azure and GCP — scoped during pre-engagement.

Learn more
  • SVC-05

    Security Assessments

  • SVC-06

    Retesting / Remediation Verification

  • SVC-07

    Application Security Testing

  • SVC-08

    Infrastructure Security Testing

  • SVC-09

    Compliance-supporting testing

Evidence program

  • SOC 2Technical testing designed to support SOC 2 evidence collection.
  • PCI DSSExternal, internal, web application and segmentation testing scoped to applicable requirements.
  • NIST · CIS ControlsTesting that can be mapped to NIST guidance and CIS Controls where relevant.
  • Customer requirementsReports and attestation letters for enterprise procurement and questionnaires.
Compliance evidence

Testing you can use as technical evidence.

Independent penetration testing can form part of an organization's security testing and evidence program.

CyberZ does not perform SOC 2 examinations or issue SOC 2 reports. CyberZ provides the independent technical testing; your auditor or customer decides how it is used.

Penetration testing for SOC 2 evidencePCI DSS penetration testing
Reporting

Reports written for engineers and for the people who sign off.

An executive summary for security and compliance stakeholders. A technical report your developers can work from without a meeting.

How we reportView Sample Report
FINDING CYZ-DEMO-004Sample / fictional data
HighCVSS 8.1

Cross-tenant access to invoice PDFs via predictable object identifiers

Affected asset
api.example-app.test/v1/invoices/{id}/pdf
Technical impact
Authenticated user of tenant A can retrieve invoices belonging to tenant B.
Business impact
Exposure of customer billing data across tenants; contractual and regulatory exposure.
Remediation
Enforce tenant ownership check server-side on object lookup; use non-sequential identifiers as defense in depth.
Evidence (redacted)
GET /v1/invoices/10482/pdf HTTP/2Authorization: Bearer <tenant-A user token>HTTP/2 200 OKContent-Type: application/pdf  · owner: tenant-B
Process

Scoped, authorized, verified.

Full 10-step process

  1. Scope & authorize

    Consultation, scope definition, Rules of Engagement and written authorization. Testing starts only after both are agreed.

  2. Test

    Manual testing against authorized targets, guided by OWASP WSTG / ASVS and adapted to your scope. Findings are validated before they are reported.

  3. Report

    Executive summary for stakeholders, technical report for engineers. Every finding ships with evidence, impact, CVSS and remediation.

  4. Remediate & retest

    You fix, we verify. Retest results are added to the report and a CyberZ Penetration Testing Certificate can be issued for the assessed scope.

Testing is performed only against explicitly authorized targets. Testing only begins after explicit authorization and an agreed scope.

Certificate

A certificate that says exactly what was tested — and nothing more.

The CyberZ Penetration Testing Certificate confirms that an independent assessment of a stated scope was performed on a stated date, with a verifiable ID. It does not claim your systems are secure, vulnerability-free or compliant.

About the certificateVerify Certificate
verify
$ cyberz verify CYZ-2026-0001certificate ........ CYZ-2026-0001company ............ Example Company Inc.  (fictional)assessment ......... Web Application & API Penetration Testscope .............. example.com, api.example.commethodology ........ OWASP WSTG / ASVSstatus ............. VALID  (point-in-time assessment)
Next step

Request a security assessment.

Tell us what you need tested, when, and which evidence you need at the end. We reply with scoping questions, not a sales deck.

Request a Security AssessmentView Sample Reportcontact@cyberz.net