Penetration Testing: What It Costs, What It Covers, and Why You Need It

Cyber attacks against businesses of every size have increased dramatically. The FBI's Internet Crime Complaint Center recorded USD 16.6 billion in reported losses in 2024, up 33% in a single year. Financial services, healthcare, logistics, and government contractors are primary targets.

Penetration testing — the practice of systematically attacking your own systems to find weaknesses before real attackers do — is no longer optional for any business handling sensitive data or financial transactions.

This guide explains what a penetration test actually involves, what it costs, what compliance frameworks require it, and how to evaluate firms offering this service.

What Is Penetration Testing?

A penetration test (pentest) is a controlled, authorised attack against your IT systems, applications, or network infrastructure. The goal is to identify vulnerabilities — misconfigured servers, weak authentication, injection flaws, insecure APIs, privilege escalation paths — before a malicious actor does.

A pentest is not the same as a vulnerability scan. A vulnerability scan uses automated tools to detect known issues. A penetration test uses skilled engineers who chain vulnerabilities together, think creatively, and attempt to achieve real business impact (access to customer data, financial system compromise, ransomware deployment paths).

The output of a pentest is a detailed report containing:

• A list of all vulnerabilities found, ranked by severity (Critical / High / Medium / Low)
• Evidence of exploitation — screenshots, proof-of-concept code, or data extracted
• Business impact analysis (what an attacker could actually do with each finding)
• Remediation guidance specific to your environment

Types of Penetration Tests

Web Application Pentest Tests web applications — customer portals, internal tools, APIs, admin panels. Covers OWASP Top 10 vulnerabilities: injection, broken authentication, IDOR, SSRF, XSS, insecure deserialisation. This is the most commonly requested type for businesses running SaaS products or customer-facing portals.

Network Infrastructure Pentest Tests your internal network, cloud infrastructure, firewalls, and server configurations. Relevant for businesses with on-premise servers, hybrid cloud environments, or complex network topologies. Identifies lateral movement paths an attacker could use after breaching the perimeter.

Mobile Application Pentest Tests Android and iOS applications. Covers insecure data storage, weak cryptography, improper session management, and backend API vulnerabilities. Required for any business with a customer-facing mobile app, particularly in financial services.

Social Engineering Assessment Tests your people, not your technology. Includes phishing simulations, vishing (voice phishing), and physical security testing. Human error accounts for over 80% of successful breaches. This type of assessment is often the most uncomfortable for leadership — but frequently the most revealing.

Red Team Exercise An advanced engagement where a skilled team attempts to achieve a specific objective (exfiltrate data, compromise a specific system) using any available method — technical, social, and physical — over an extended period. Typically 4–6 weeks. Appropriate for mature organisations with existing security programmes.

What Does Penetration Testing Cost?

Pricing varies significantly by scope, depth, and provider quality. As a realistic benchmark:

Web Application Pentest (single application) Market range: USD 5,000 – USD 25,000 What drives cost: number of roles/user types, number of API endpoints, authentication complexity, whether source code review is included

Network Infrastructure Pentest Market range: USD 7,000 – USD 30,000 What drives cost: number of IP addresses in scope, network complexity, cloud vs on-premise, whether internal and external are both included

Mobile Application Pentest (single platform) Market range: USD 5,000 – USD 20,000 What drives cost: number of features, API backend complexity, whether both platforms (iOS and Android) are included

Full-Scope Assessment (web + network + social engineering) Market range: USD 25,000 – USD 75,000+ Appropriate for: banks, payment processors, healthcare platforms, government contractors, and any business seeking ISO 27001 certification

Beware of very low-priced pentests. A firm quoting USD 1,000 for a "penetration test" is almost certainly delivering automated scan output with a report template — not a genuine manual assessment. The gap between an automated scan and a real pentest is the difference between a checklist and an investigation.

Which Compliance Frameworks Require It?

ISO 27001 The international standard for information security management requires regular security testing as part of Annex A controls. Most enterprise procurement teams and international clients will now ask for ISO 27001 certification before signing contracts. Penetration testing is required to achieve and maintain certification.

PCI DSS (Payment Card Industry Data Security Standard) Any business that accepts, processes, stores, or transmits cardholder data must conduct penetration testing at least annually and after any significant infrastructure change. This applies to every business using card payment terminals or processing online card payments.

Financial Regulators' Cybersecurity Rules Financial regulators in most markets (for example DORA in the EU, FFIEC guidance in the US, and central-bank guidelines across Africa and Asia) require regular penetration testing for banks, lenders, and payment service providers. Regulated financial institutions face significant penalties for non-compliance.

GDPR and Other Data Protection Laws GDPR and comparable data protection laws require organisations to implement appropriate technical measures to protect personal data, and GDPR explicitly calls for regularly testing how effective those measures are. A penetration test is the standard way to evidence it.

How to Choose a Penetration Testing Firm

Ask for a methodology document. A reputable firm should be able to explain their testing methodology clearly: which standards they follow (OWASP, PTES, OSSTMM), what testing phases they conduct, and how they handle findings during the engagement.

Ask who will actually conduct the test. Many firms use junior staff or subcontractors for the actual testing while senior staff handle sales and reporting. Ask specifically about the experience level of the engineers who will be hands-on-keyboard.

Ask for a sample report from a previous engagement. The quality of the pentest report is one of the most important deliverables. Reports should contain: specific proof of exploitation (not just tool output), clear business impact statements, and actionable remediation steps — not generic CVSS descriptions.

Ask about responsible disclosure during the test. What happens if they find a critical vulnerability mid-engagement? You want a firm that communicates immediately rather than waiting until the final report is delivered three weeks later.

Check for certifications. Relevant certifications include OSCP (Offensive Security Certified Professional), CEH, and CREST. Not all good engineers have certifications, but certifications are a reasonable minimum signal.

Ask about retest policy. A proper engagement includes a retest after remediation to confirm that findings have been fixed. Firms that charge extra for retests or do not include them at all are not operating to a professional standard.

Our Approach to Penetration Testing

We provide penetration testing through a team of certified security engineers working with clients worldwide. All engagements are conducted manually by senior engineers — we do not resell automated scan output.

Our testing covers:

• Web application security (OWASP Top 10, business logic vulnerabilities, API security)
• Network infrastructure and cloud configuration review
• Mobile application security (Android and iOS)
• Social engineering simulations

All testing is scoped precisely to your environment. We provide a detailed findings report with proof-of-concept evidence, business impact analysis, and prioritised remediation guidance. Retests are included in every engagement.

We also support ISO 27001 certification journeys, providing both the testing evidence required and the documentation support needed to achieve certification.

Request a penetration test scoping call →

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Penetration testing and cybersecurity for businesses worldwide. ISO 27001 certified. Get a quote →