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Pen Testing as a Service Providers: Key Factors to Consider in Your Selection

Ihor Sasovets
Lead Security Engineer at TechMagic, experienced SDET engineer. Eager about security and web penetration testing.
Pen Testing as a Service Providers: Key Factors to Consider in Your Selection

How can organizations ensure robust defenses against relentless cyber threats? The answer lies in the strategic deployment of Penetration Testing as a Service (PTaaS) and the meticulous selection of an adept provider.

The foundation of a resilient cybersecurity posture rests upon the precision and depth of the chosen PTaaS provider. Opting for the right partner is not merely a decision; it's an imperative.

What is Penetration Testing as a Service?

Penetration Testing as a Service (PTaaS) is a comprehensive cybersecurity approach that offers continuous, on-demand penetration testing services to assess an organization's IT infrastructure, applications, and systems for vulnerabilities. Unlike traditional penetration testing, which often occurs intermittently, PTaaS operates as an ongoing, subscription-based service, providing regular assessments to identify potential weaknesses before they are exploited by malicious actors

penetration test as a service

The primary objective of penetration testing is to simulate real-life attacks on specific IT systems, evaluating various security and compliance criteria.

Ideally, penetration testing services encompass a broad spectrum, including:

  1. API, web application, and network penetration testing (Internal and External).
  2. IoT device, red team simulation, social engineering, and wireless network pen-testing.
  3. Cloud platform, mobile application, IoT/ICS, and embedded system penetration testing.
  4. Compliance-driven testing for regulations/standards such as GDPR, PCI DSS, HIPAA, etc.

Implementing PTaaS guarantees real-time testing, providing prompt feedback on even the smallest system alterations and easy access to security professionals. For instance, upon detecting a security loophole due to a code change, immediate notification, along with guidelines for remediation, is received.

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Benefits Pen Testing as a Service

With the right strategy and expert support, Penetration Testing as a Service significantly enhances an organization’s security strategy in several ways:

Early Feedback on Code Changes

PTaaS seamlessly integrates into the software development lifecycle (SDLC), alerting developers to vulnerabilities before deploying new code. This proactive approach keeps teams ahead of potential threats.

Fast Remediation Support

PTaaS providers offer detailed remediation assistance, including visual aids like screenshots and videos, streamlining the process of locating and addressing vulnerabilities.

Access to Security Engineers

PTaaS providers connect organizations with security experts, ensuring efficient resolution of security gaps without exhausting in-house resources.


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Cost Optimization

PTaaS automates processes, optimizing existing investments and preventing security tools from becoming obsolete, reducing operational costs.

Adherence to Industry Standards

PTaaS aids businesses in meeting industry security standards such as NIST and OWASP more comprehensively and with greater ease.

Real-Time Hacker-Like Testing

Penetration Testing involves simulating hacker actions to exploit vulnerabilities, providing insight into how security measures fare against real cyber threats. PTaaS conducts tests on demand, enabling immediate visualization of vulnerabilities in near real-time.

Reduced Downtime

Proactive penetration testing mitigates service interruption risks, preventing substantial financial losses associated with downtime caused by cyberattacks like DDoS attacks.

Enhanced Compliance

Adherence to cybersecurity regulations like SOC 2, PCI DSS, ISO/IEC 27001 is supported by consistent penetration testing, ensuring a strong cybersecurity posture and avoiding substantial fines for non-compliance.

Challenges of implementing PTaaS

When it comes to integrating PTaaS, the common challenges are:

  1. When integrating PTaaS with existing systems and processes, complexity arises in aligning diverse IT infrastructures and applications while ensuring seamless operation.
  2. When acquiring and retaining proficient cybersecurity experts for PTaaS implementation, challenges emerge due to the scarcity of specialized talent in the field.
  3. When defining the scope of PTaaS assessments, challenges may arise in identifying critical assets for testing and determining the depth of assessments.
  4. When finding the equilibrium between automated testing and human intervention, challenges lie in avoiding over-reliance on automation or resource-intensive manual testing.
  5. When conducting PTaaS assessments, meeting diverse regulatory requirements (e.g., SOC, ISO, PCI DSS) poses complexities related to data privacy and compliance considerations.
  6. When optimizing PTaaS, challenges include ensuring comprehensive training and awareness among internal teams to interpret findings accurately.
  7. When implementing a robust system for continuously monitoring vulnerabilities, challenges include timely remediation and a responsive framework.
  8. When aligning PTaaS implementation with organizational culture, overcoming resistance to change and fostering a cybersecurity-centric culture can be challenging.

Scope of Penetration Testing as a Service

benefits of pen testing scope

Continuous Testing

PTaaS revolves around the concept of continuous testing. It involves regularly scheduled assessments and can be conducted daily, weekly, or after each significant change in an organization's IT environment.

Comprehensive Assessments

PTaaS evaluates the entire scope of an organization's digital assets, including networks, servers, applications, and databases. It aims to uncover vulnerabilities across these domains to ensure a robust security posture.

Tailored Approach

The service is adaptable and tailored to meet an organization's specific needs and risks. It can encompass various testing methodologies, including black-box, white-box, and gray-box testing, based on the organization's requirements.


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Automation and Manual Testing

PTaaS combines automated vulnerability scanning tools with manual testing by experienced security professionals. This hybrid approach ensures both efficiency and depth in identifying potential security flaws.

Real-time Reporting and Insights

PTaaS provides real-time reporting and actionable insights. Detailed reports are generated after each assessment, highlighting identified vulnerabilities, their severity, and recommendations for remediation.

Key Factors in Choosing a PTaaS Provider

pen testing services

The cyber threats and the scarcity of cybersecurity talent make it challenging for organizations to hire and retain certified in-house penetration testers. While internal testing bolsters audit readiness, patch management, and incident response, integrating these capabilities into routine security operations remains intricate. Additionally, the costs linked with an internal team can be substantial, leading organizations to consider outsourcing such engagements.

Third-party penetration testing providers offer a solution without the need for additional hires. Let’s discover the main points to look for in PTaaS providers.

Expertise and Experience

A PTaaS provider seasoned in various sectors brings nuanced insights into industry-specific vulnerabilities and compliance nuances. Their expertise aids in tailoring penetration tests to address industry-specific threats effectively.

Look for evidence of successful penetration tests conducted across industries. A reliable PTaaS provider should readily showcase a history of identifying vulnerabilities, fortifying defenses, and effectively assisting clients in mitigating security risks. Real client feedback and success stories affirm the provider's ability to deliver quality services, validate their expertise, and indicate their commitment to client satisfaction.

Expertise in security frameworks such as NIST, ISO, or CIS benchmarks is crucial. A provider's familiarity with these frameworks ensures the alignment of testing methodologies with recognized standards. Compliance with industry regulations is non-negotiable. A reputable PTaaS provider should showcase adherence to relevant compliance standards (e.g., GDPR, HIPAA) in their testing methodologies.

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Comprehensive Testing Approach

The effectiveness of penetration testing relies on a comprehensive approach encompassing various methodologies tailored to address specific business requirements. Here's an insight into different methodologies:

  • Black Box Testing: This method mirrors real-world scenarios, offering an external perspective on security weaknesses and revealing vulnerabilities that might be exploited by external threats.
  • White Box Testing: It provides in-depth insights into system intricacies, enabling testers to pinpoint vulnerabilities that might be overlooked in black box testing. It's crucial for thorough internal assessments and code-level security checks.
  • Gray Box Testing: This method strikes a balance, leveraging both external and internal perspectives. It allows testers to focus on critical areas while still considering potential threats from an external viewpoint.
A one-size-fits-all approach in penetration testing might overlook critical business-specific vulnerabilities. Tailoring methodologies to align with an organization's unique infrastructure, industry regulations, and specific risks is imperative.

Regulatory Compliance and Certifications

1. Compliance with Industry Standards:

  • PCI DSS (Payment Card Industry Data Security Standard): Compliance with PCI DSS is essential for providers handling payment card data. Adherence to these standards ensures secure cardholder information processing, storage, and transmission.
  • HIPAA (Health Insurance Portability and Accountability Act): Healthcare-focused providers must comply with HIPAA to safeguard patient data privacy and security. Compliance involves stringent measures to protect electronic health records and ensure their confidentiality.
  • GDPR (General Data Protection Regulation): For providers dealing with European data, compliance with GDPR is crucial. Adherence to GDPR mandates ensures the lawful and transparent handling of personal data while respecting individual privacy rights.

Certifications: ISO 27001: Holding ISO 27001 certification denotes a robust Information Security Management System (ISMS). Providers with this certification demonstrate a commitment to systematically managing information security risks.

Certifications like ISO 27001 and compliance with GDPR open doors to a global market. Clients seeking services internationally prioritize providers with certifications that validate their commitment to stringent security standards. Also, PTaaS providers must invest in maintaining certifications through continual improvement initiatives and periodic audits to sustain high standards.

Reporting and Actionable Insights

PTaaS providers deliver detailed reports encompassing identified vulnerabilities, their severity levels, and their potential impact on the organization's security posture. Reports should include clear explanations, technical details, and practical recommendations for remediation.

Reports often prioritize vulnerabilities based on severity, allowing organizations to focus on critical issues first. Categorizing findings by affected systems or applications aids clarity and targeted remediation efforts.

Actionable insights comprise precise and actionable recommendations to mitigate identified vulnerabilities. Providers must articulate steps that organizations can implement to address each issue effectively.

Security of Data and Confidentiality

Here are the key measures taken by PTaaS providers:

  1. PTaaS providers employ robust encryption techniques to secure sensitive data throughout testing processes. Encryption ensures data confidentiality, rendering it unreadable and unusable if intercepted.
  2. Access to sensitive data is strictly controlled, limiting it to authorized personnel involved directly in the testing process. Role-based access ensures only essential personnel have access to critical information.
  3. During testing, PTaaS providers anonymize or pseudonymize sensitive data whenever possible.
  4. PTaaS providers and their personnel sign NDAs, legally binding documents ensuring the confidentiality of client information. These agreements highlight responsibilities and penalties for mishandling sensitive data.
  5. PTaaS testing is conducted in controlled and isolated environments, preventing accidental exposure of sensitive information to external entities or unauthorized parties.
  6. After testing, sensitive data is securely disposed of following industry best practices. Providers ensure the complete removal or destruction of any retained test data to prevent potential misuse or exposure.
  7. PTaaS providers undergo regular audits and assessments to validate their adherence to security protocols and confidentiality measures.


PTaaS should be evaluated based on its value rather than the initial cost. A provider offering comprehensive, actionable insights and continuous improvement often justifies higher costs through enhanced security posture.

Most common pricing models in PTaaS:

  1. Fixed Pricing: This model involves a predetermined cost for a specified scope of testing services. It offers clarity on expenses, making budgeting more straightforward for organizations.
  2. Dedicated Team: Some providers offer dedicated teams working exclusively for clients, often charging a retainer or fixed monthly fee. This model ensures consistent availability and personalized attention.
  3. R&D Center Approach: Providers may charge based on access to their research and development centers, granting clients access to cutting-edge tools and methodologies.

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How PTaaS differ from regular pen testing?

When comparing PTaaS to a vulnerability scanning solution, PTaaS provides added validation and eliminates false positives but might have a slower reporting process. While some services offer daily reporting, this could involve extra charges. Unlike ad-hoc testing, which is possible with internal vulnerability scanning tools, PTaaS generally necessitates scheduled assessments. Vendors often stress scheduled assessments to manage expenses. Although not a direct replacement, PTaaS can supersede internal vulnerability scanning, especially for companies lacking in-house expertise.

PTaaS isn't synonymous with a full-scale penetration test. It's essential not to consider PTaaS a complete substitute for a dedicated, highly manual penetration test. Manual testing in a traditional penetration test is more extensive, allowing for identifying complex vulnerabilities due to the substantial time dedicated to this method. PTaaS typically reserves shorter periods for manual testing (1-2 days per test), relying heavily on automated testing.

In contrast, traditional penetration testing dedicates more time to manual testing within a fixed timeframe. Traditional tests, often contracted annually due to cost considerations, might take longer to uncover vulnerabilities.

Who Needs Penetration Testing as a Service?

Here are some profiles that greatly benefit from PTaaS:

  • Small and Medium Enterprises (SMEs): SMEs often lack dedicated cybersecurity teams. PTaaS offers them access to expert-level security testing without the need for extensive in-house resources.
  • Large Enterprises: Even sizable corporations face challenges adapting to evolving cyber threats. PTaaS provides them with scalable, ongoing security testing across their expansive digital footprint.
  • Startups: Startups, especially those reliant on technology, must prioritize security from inception. PTaaS allows them to establish strong security measures without substantial upfront investments.
  • Healthcare and Financial Institutions: Sectors dealing with sensitive personal and financial information must comply with stringent regulations. PTaaS helps maintain compliance while fortifying defenses against cyber threats.
  • Government Agencies: Government bodies dealing with sensitive information and critical infrastructure rely on robust cybersecurity measures. PTaaS assists in regularly assessing and fortifying their systems against potential threats.

In a Nutshell

While Penetration Testing as a Service offers evident advantages, it's not a universally perfect solution in every security scenario. Complex systems like industrial control systems might not align well with PTaaS. Moreover, PTaaS, as an off-the-shelf service, may cover common vulnerabilities but might require adaptation for an organization's unique risk profile, which could consume time. In scenarios with broad-ranging or intricate security environments, a custom pen test could deliver more effective results.

The significance of choosing the right Penetration Testing as a Service provider cannot be overstated. Selecting the right PTaaS provider is pivotal for several reasons:

  • A proficient provider bolsters your security posture by identifying vulnerabilities proactively.
  • They ensure adherence to industry standards like PCI DSS, HIPAA, GDPR, and safeguard sensitive data.
  • A reliable provider offers ongoing monitoring, reporting, and actionable insights for swift remediation.

Take the First Step Towards a Secure Future

By meticulously evaluating, selecting, and partnering with a proficient provider, organizations can pave the way for a proactive and resilient cybersecurity posture. Fortify your defenses and safeguard your organizational assets against the ever-changing threat landscape. Your proactive steps with penetration testing services today will safeguard your organization's future tomorrow.

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  1. What exactly is Penetration Testing as a Service (PTaaS), and how does it differ from traditional penetration testing?

    Penetration Testing as a Service (PTaaS) is a subscription-based model that offers continuous and flexible security testing. Unlike traditional penetration testing, which is often a one-time or periodic engagement, PTaaS provides ongoing assessments, allowing for more frequent testing and faster response. PTaaS typically combines automated scanning with manual testing by security experts to identify vulnerabilities in systems, networks, and applications.

  2. Why is choosing the right PTaaS provider so crucial for organizations?

    Selecting the right PTaaS provider is critical as it impacts an organization's security posture. A proficient provider ensures comprehensive and timely identification of vulnerabilities, compliance with industry standards, and offers actionable insights for mitigating risks. The right provider aligns with an organization's specific needs, offering tailored services that integrate smoothly with existing operations.

  3. How often should you perform a pen test?

    Organizations should schedule security testing at least annually, with additional assessments after major infrastructure changes, before product launches, or during mergers/acquisitions. Larger entities with substantial personal or financial data or stringent compliance mandates should consider more frequent penetration tests.

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Ross Kurhanskyi
Head of partner engagement