Market leaders trust us
When teams book a penetration test
Your trusted partner for all types of cybersecurity testing services
Web app & API pentest
Beyond OWASP Top 10 — we exploit business logic and chain vulnerabilities.
Red team attack simulation
We think like your real adversary — adaptive, persistent, creative.
Network pentest
External perimeter & internal infrastructure — lateral movement included.
Cloud security assessment
Misconfigs, IAM flaws, and lateral movement in AWS, GCP, Azure.
Compliance pentest
SOC 2, ISO 27001, DORA, HIPAA — built around your specific requirements.
Mobile app pentest
iOS & Android — logic flaws and data exposure that scanners miss.
Continuous pentest
Monthly & quarterly cadence — test as your product ships, not once a year.
Social engineering & phishing
Your people are the attack surface. We test awareness and response.
AI / LLM security testing
Prompt injection, model theft, data leakage — we break AI before attackers do.
What Clients Say About Us
Legal Tech Company
Clutch verified review
СТО
G2 verified reviewer
Software Company
Gartner Peer Insights verified review
Awards & Certifications
How we do it differently
Renewal, new audit requirement, or board asking questions? Our penetration testing services scope and start in days.
Scoping demo call
We learn your app, infrastructure and the parts that matter most, then scope and price the test.
Testing
Certified testers run manual, business-logic-driven testing and chain findings into real exploits.
Report
Findings with severity, reproduction steps and remediation, in business terms for leadership and full detail for your team.
Free remediation retest
We verify your fixes and try to bypass them.
Support
Our testers stay available to your developers until the findings are closed.
What you get
Use the report to pass your audit, unblock the enterprise deal waiting on it, and give your developers findings they can close and we verify.
- Executive summary for leadership, in business terms
- Technical findings with reproduction steps and proof of concept
- Severity rating for every finding
- Remediation guidance your developers can act on
- Free remediation retest, included in the price
- An attestation letter you can hand to customers or auditors
FAQ
What is penetration testing?
What's the difference between penetration testing services and vulnerability assessment?
How much does a penetration testing service cost?
How long does a penetration test take?
On average, cyber security testing services take around 3 working weeks, depending on the size and complexity of an organization. A typical timeline for a pentest includes the following stages:
- Planning. Together with you, we define and document test objectives, scope of work, start date, and engagement model for the pen test as a service team.
- Reconnaissance. Depending on the selected pen testing as a service methodology, we collect the necessary information regarding targeted apps and infrastructure, roles, credentials, business logic, and more.
- Vulnerability discovery and exploitation. Our ethical hackers manually test the defined assets to identify security weaknesses, gaps in design and architecture, and process loopholes. They exploit all the discovered vulnerabilities to evaluate the risk level of each issue and potential harm to the business.
- Reporting. The UnderDefense pen testing team creates a detailed report on all the findings, including all the evidence and artifacts like videos and screenshots. Additionally, our experts prepare a list of tactical recommendations on how to solve each vulnerability quickly and effectively. The working results are presented to the client.
- Free post-remediation testing. When all the improvements and changes are made, our ethical hackers are ready to check fixed vulnerabilities and retest the targeted assets. Upon completing the assessment, you get a professional attestation letter confirming your security rating.
How often should penetration tests be conducted?
- Regulatory Requirements – Compliance standards like PCI DSS, ISO 27001, and SOC 2 may require more frequent testing.
- Significant Changes – Conduct a test after major infrastructure, application, or system updates.
- Incident Response – If a security breach occurs, a pen test can help identify vulnerabilities that were exploited.
- Business Risk – High-risk industries or businesses handling sensitive data may need more frequent testing.
- Threat Landscape – Emerging threats may necessitate additional assessments to stay ahead of attackers.
When can you start pen testing?
What methodologies for a pentest as a service do you use?
Do you store the results of penetration services?