Penetration testing — commonly called a pentest — is a simulated cyberattack carried out by security professionals with your explicit written authorization. The goal is to find vulnerabilities in your systems, applications and networks before real attackers do.
Key distinction: A penetration test is not a vulnerability scan. A scanner finds known issues automatically. A penetration tester thinks like an attacker, chains vulnerabilities together and demonstrates real-world impact.
How Does a Penetration Test Work?
A professional pentest follows a structured methodology derived from industry standards such as PTES (Penetration Testing Execution Standard) and OWASP. At SmartKali, every engagement follows these phases:
- Authorization & Scoping — A written authorization agreement is signed before any testing begins. Scope, targets, timing and rules of engagement are defined.
- Reconnaissance — Gathering intelligence about the target: subdomains, technologies, exposed services, employee information.
- Vulnerability Analysis — Identifying weaknesses through manual testing and automated tools, then verifying each finding to eliminate false positives.
- Exploitation — Attempting to exploit confirmed vulnerabilities to demonstrate real-world impact, such as data access or privilege escalation.
- Post-Exploitation — Assessing what an attacker could do after gaining initial access: lateral movement, persistence, data exfiltration.
- Reporting — Delivering a detailed PDF report with executive summary, technical findings, CVSS 3.1 scores and remediation steps.
Types of Penetration Testing
Web Application Penetration Testing
Tests websites, web apps and APIs against the OWASP Top 10 — covering SQL injection, XSS, broken authentication, IDOR, SSRF, XXE and more. This is the most common type of pentest for SaaS companies, e-commerce platforms and fintech.
Infrastructure / Network Penetration Testing
Tests servers, firewalls, routers and network segments for misconfigurations, unpatched software, weak credentials and lateral movement opportunities. Critical for companies with internal networks or cloud infrastructure.
Mobile Application Penetration Testing
Tests iOS and Android apps against the OWASP Mobile Top 10 — covering insecure data storage, broken authentication, weak cryptography and API exposure. Essential for any business with a mobile app.
Cloud Security Review
Reviews cloud configurations on AWS, Azure and GCP for misconfigured IAM policies, exposed storage buckets, overly permissive security groups and logging gaps.
Social Engineering Testing
Tests human vulnerabilities through simulated phishing campaigns, pretexting calls and physical access attempts. The human layer is the most exploited attack vector.
Black Box, Grey Box or White Box?
- Black box — The tester has no prior knowledge of the system, simulating an external attacker.
- Grey box — The tester has partial knowledge (e.g., user-level credentials), simulating an insider threat or a compromised account.
- White box — The tester has full access to source code, architecture diagrams and credentials, enabling the deepest and most efficient testing.
What Does a Pentest Report Include?
A professional penetration test report from SmartKali includes:
- Executive summary for non-technical stakeholders
- Full list of findings with CVSS 3.1 severity scores (Critical, High, Medium, Low, Informational)
- Step-by-step reproduction steps for each vulnerability
- Evidence: screenshots, request/response captures, proof-of-concept code
- Remediation recommendations with technical guidance
- Compliance mapping (NIST, OWASP, PCI DSS, ISO 27001 as applicable)
How Often Should You Run a Penetration Test?
Industry standards and most compliance frameworks recommend penetration testing at least once per year. Additionally, a pentest should be performed after any major change to your infrastructure or application, after a security incident, and before launching a new product.
PCI DSS requires annual penetration testing for all cardholder data environments. SOC 2, ISO 27001 and HIPAA strongly recommend it as part of a risk management program.