CREST Penetration Testing

Protecting the areas of your business that you can’t see, iSTORM® are a CREST penetration testing provider.

At iSTORM® we believe that certifications and standards promote consistency, which is why we are a CREST penetration testing provider. By following a CREST approved methodology, we are able to closely monitor the effectiveness of both our testers and the reports that they produce. More information on the benefits of using a CREST penetration testing provider can be found on the CREST website.

For more information on how iSTORM® can support your CREST penetration testing requirements or to arrange a no obligation scoping review, please use the form below and one of the team will be in touch.


What is CREST penetration testing?

CREST penetration testing is an assessment conducted by a CREST-accredited provider. Penetration testing (often referred to as ‘pentesting’) is an important part of an organisation’s security strategy, ensuring that you can identify the vulnerabilities that you can’t see. In addition to following our CREST methodology, our team of testers have in-depth experience of the real threats that businesses face and the likelihood that these can be exploitedOur reporting considers theoretical risk scoring systems such as CVSS 3.1 as well as real-world factors that may increase or decrease the risk posed to your systems.

iSTORM®              CREST Logo

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We can help your organisation understand the threats your networks and applications face through targeted internal and external testing, including:

  • CREST approved consultants
  • Security Clearance approved testers
  • Network Infrastructure
  • Web & Mobile Applications
  • WiFi Networks
  • Physical Security & Social Engineering
  • Simulated Phishing attacks

All tests are scoped by our team of specialists to meet your organisations needs.


CREST Penetration Testing

Benefits of CREST penetration testing with iSTORM®

CREST penetration testing with iSTORM® helps prepare your business for the future. Our team of CREST certified infrastructure testers deliver a full security assessment of your digital estate. We help you identify vulnerabilities and weaknesses before the hackers do!

iSTORM® can review your security from an internal and external point of view, helping to ensure you can defend attacks from outside of your physical and logical perimeters and that you are protected from insider threats.

We have developed a new way to deliver and report on your penetration tests, to find out more click here.

Choose your colour!

We offer a full range of penetration testing options, which are known in the industry as White Box, Grey Box, Black Box and Red Teaming.


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iSTORM are provided with information on the target systems, full permissions, log in credentials and IP ranges/URL’s.

This is designed to identify the majority of vulnerabilities. The benefit is that time/cost are reduced, as the tester is provided with everything they need to provide a full assessment.


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iSTORM would be given no information on the target and would need to start from scratch with discovery and reconnaissance to identify and navigate the clients networks and applications.

This takes more time, and therefore cost, but it does give a clearer view on your security and sophistication levels.



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A combination of White/Black box testing, performed with limited information about the internal functionality of the system.

You may want us to test your overall network with full disclosure but look at some applications with no starting information. This will be a tailored offering to you, based on your drivers and goals.


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Often delivered over a period of months, this is the real life hack simulation. A strategic approach is used to identify issues and to test your ability to detect and respond to an attack.

We progress from reconnaissance, through gaining a network foothold, moving laterally to the valuable information, and simulated exfiltration. 


Scoping your penetration test

All iSTORM® penetration testing projects are scoped by our team of specialist testers to meet your organisation’s needs. Our experienced, expert testers can help prevent unauthorised access to your systems and data by exposing the vulnerabilities and weaknesses in your infrastructure and applications before anyone else does. It is recommended that CREST penetration testing is carried out annually to ensure that your organisation and your customers have confidence in the security of your applications and systems.

How much does a pen test cost?

The cost of a pentest can depend on a number of factors, from the size of your organisation or the application being tested to the number of pages on the website for web app tests. All our tests are scoped in advance of a quote being issued so you know what you are getting.

For more information on how we can support your CREST penetration testing requirements or to arrange a no obligation scoping review, please complete the form below and one of the team will be in touch.

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Who are CREST?

CREST is a certification body that represents and supports the technical information security market. Set up in 2006 it was developed in the response to the need for more regulated quality and professional services across the digital space. It is now recognised across the world as the cyber assurance body for the technical security industry.

Crest has become the respected standard for penetration testing worldwide and it is increasingly a mandatory requirement for companies, to ensure they have the most stringent security measure in place. This is especially critical for government and financial services.

Crest accreditation gives you the confidence that penetration testing is carried out in accordance with the highest legal, ethical and technical standards.






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