What is Penetration Testing as a Service (PTaaS)?

Oliver Moradov
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Organizations are under constant threat from a wide variety of vulnerabilities. Security professionals can be slow to identify and remediate vulnerabilities in software and IT systems, creating a large window of exposure. 

Over the last decade or so, penetration testing has developed into a popular method that organizations can use to safeguard their technical infrastructure, finding security gaps and vulnerabilities before cybercriminals can exploit them. 

Penetration testing as a service (PTaaS) eases the procurement of pentesting, enabling more frequent and lower cost penetration tests, while providing a platform for collaboration between the organisation and PT company. This allows an organization to identify vulnerabilities and remediate them on an ongoing basis. Originally, penetration testing was a complex, contract-based engagement that organizations could carry out only once or twice per year. With PTaaS, they can carry out a penetration test every day, or immediately after every code change.

Pentesting as a Service is not the same as cloud pentesting. PTaaS is a delivery platform. Comparatively, cloud pentesting aims to discover security gaps in a particular cloud infrastructure. 

In this article:

Penetration Testing as a Service (PTaaS) Benefits

Real-Time, Hacker-Like Testing

Pentesting is a unique type of security hardening. It’s the only real way to understand precisely what cybercriminals see when they approach your software or company. What cybercriminals see may be very different from what the organization or your developer sees. 

Continuous retesting extends the usefulness of a pentesting service, meaning you will immediately know if there is a vulnerability in the most recent update, and not once it is too late. 

Continuous and Early Feedback

Agile methodology promotes frequent testing of minor code modifications. These are simpler to deal with than a large software release. The outcome is a more robust software that demonstrates resilience and is easier to patch. 

PTaaS has similar benefits as traditional penetration testing. By providing your developers with early and continuous feedback during and after the test about possible vulnerabilities, they can quickly remediate them. A good PTaaS will offer detailed reports, including attack steps, screenshots, and documented error codes so that developers don’t need to spend time working out why or how. 

The result is improved efficiency in operations and closer integration of security measures into the development process. 

How Pentesting as a Service (PTaaS) Works

Traditionally, before cloud computing, security specialists delivered penetration test results at the end of the testing period. While the information was useful, the delayed nature of the information often made it hard for on-site security teams to fix and prioritize test results.  

PTaaS platforms allow customers to see their data, in real-time, via a dashboard that presents all pertinent details before, during, and after the test is carried out. 

Like traditional pentesting services, PTaaS vendors give their customers detailed reports that can help them identify and remediate the discovered vulnerabilities. PTaaS vendors assist their customers, providing them with a knowledge base to help on-site security teams handle remediation.

PTaaS is suitable for any sized organization. Most platforms are highly flexible and can deal with everything from a holistic testing program to custom reporting tools for customers to meet strict regulatory requirements.  

Related content: Read our guide to penetration testing reports (coming soon)

Types of Penetration Testing Services

You can use PTaaS to identify security weaknesses in different parts of your organization’s infrastructure, including web applications, networks, APIs, and mobile applications.

Web Application Penetration Testing

PTaaS solutions use automated scanners (like NeuraLegion’s) to crawl web applications and perform initial reconnaissance, identification of vulnerabilities, and active exploitation to discover the impact of each vulnerability. They look for issues like:

  • Weak information validation and integrity in pages including forms or other data input
  • Weak authentication and session management
  • Lack of secure coding practices in web application source code
  • Security vulnerabilities in back-end databases and networks exposed to the web application

Related content: Read our guide to web application penetration testing

Network Penetration Testing

You can grant a PTaaS solution access to your network, and allow it to perform network security testing using methods such as port scanning, configuration benchmarking, traffic fuzzing, virus scanning, and fingerprinting. This enables investigation of vulnerabilities like:

  • Weaknesses in security tools like firewalls and intrusion detection/prevention systems (IDS/IPS).
  • Weaknesses in network equipment like switches and routers.
  • Vulnerabilities in servers, workstations, and other endpoints deployed in the network.

Network-based PTaaS can prevent attacks exploiting vulnerabilities in any of the tested systems, incorrect security tools configuration, DNS attacks, and man in the middle (MiTM) attacks. 

API Penetration Testing

Another use of PTaaS is to test application programming interfaces (APIs). Many IT systems expose APIs over the public Internet, have publicly available documentation, and enable access to valuable data, making them a prime target for attackers. 

PTaaS can learn API structure and commands, either using a standard like OpenAPI, or by importing a list of rules. PTaaS solutions can identify issues like:

  • Weak API authentication
  • Code injection vulnerabilities
  • Lack of resource rate limiting
  • Sensitive data exposure

Mobile Application Penetration Testing

A lot of organizations provide mobile applications for the use of their employees, partners, and customers. Because these applications are commonly accessed by personal devices, they are exposed to a wider variety of attacks. 

PTaaS for mobile applications can scan for and identify a variety of issues such as:

  • Malware present in a mobile application or a user’s device
  • Phishing messages sent to user devices
  • Weaknesses in WiFi networks
  • Compromise of mobile device management (MDM) protocols

Complementing Penetration Testing with Dynamic Application Security Testing (DAST)

Penetration testing and PTaaS are valuable to ensure your applications and network are secure, however a large proportion of each is conducted manually by specialist penetration testers. While PTaaS has streamlined the process of procuring and managing more frequent pentests, the process still takes time, is not scalable and the costs can spiral.

With more companies now apopting DevOps and CICD, further automation of security testing is required that removes security related bottlenecks and provides a direct and immediate feedback loop to developers.

NeuraLegion’s developer focussed Dynamic Application Security Testing scanner is used by penetration testing companies to carry out preliminary scans on their client applications and APIs. You can integrate NeuraLegion into your development pipelines to benefit from continual, scalable security testing early and often, on every build / commit. NeuraLegion automatically validates every security issue, so has NO false positives. This removes the need for you to manually validate security issues (one of the services performed by PT / PTaaS). Coupled with the ability to detect Business Logic Vulnerabilities with NeuraLegion, this reduces your reliance on and cost of your manual penetration testing or PTaaS.

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