Talk to our experts today

01684 252 770

CREST Accredited Penetration Testing Services

CREST-accredited penetration testing – satisfy auditors, insurers & partners.

 

Your Trusted Cybersecurity Partner

CREST Accredited Penetration Testing Services
Cyber Essentials Plus certification body logo
NCSC Cyber Advisor
Crown Commercial Service Supplier

Secure Your Assets. Meet Compliance. Stay Resilient.

You can trust in Assure Technical's penetration testing expertise

Whether you're looking to improve your security posture or satisfy compliance requirements such as PCI-DSS, ISO 27001, or ITHC, our CREST-accredited experts have you covered. We simulate real-world attacks to uncover critical vulnerabilities, providing you with a clear, actionable roadmap to harden your defences.

Trusted by Leading Organisations

We’ve partnered with leading companies in numerous sectors, including Finance, Technology, Defence, CNI and Healthcare. With over 300 genuine 5-star customer Trustpilot reviews and a 4.9 rating, you can trust in the service we provide.

Consultant-Led Testing

All engagements are delivered by our qualified and vetted in-house penetration testers who ensure your assessment is structured, rigorous, and aligned with industry best practice – giving your organisation confidence in the credibility of your results.

Assure Technical provide comprehensive security testing reporting and insights

Clear, Prioritised Roadmap & Reporting

Get the clarity you need to make informed decisions. We deliver detailed, jargon-free findings and practical remediation guidance, ensuring both your technical team and senior stakeholders understand exactly where to focus.

Assure conducted a penetration test on our software. The level of detail was excellent and they took extra time to make sure we understood the issues that were highlighted. I highly recommend them, their expertise is excellent and they are very easy to work with.

Managing Director - Mid-size Tech Company

As always we received excellent service. We asked Assure Technical to conduct a penetration test and the pen tester clearly put more effort into this than the original scope. The report and feedback meeting was great and very informative.

Chief Operating Officer - Large Software Company

As usual a wonderful service from Assure Technical. We love the relaxed professionalism of the service and technical expertise. It makes our working life easier, safer, and more secure. Thank you.

Director - Mid-size Management Consultancy

Our Comprehensive Service Offering

To align with your operational priorities, our penetration testing is collaboratively scoped to target your specific mix of infrastructure, applications, and cloud environments. By mapping your unique attack surface, we ensure the assessment focuses directly on the systems most critical to your organisation’s security and compliance goals.

Speak to an expert

Internal Network Testing

Our experts look at your network from the inside to understand and map how an intruder could move between systems. This helps ensure that if a device is compromised, your critical data remains protected.

find hidden vulnerabilities with application penetration testing

External Infrastructure & Firewalls

We test the security of your internet-facing infrastructure and firewall rules. This process identifies misconfigurations or vulnerabilities in your public-facing systems, helping you close gaps before they can be exploited.

strengthen your cybersecurity stance

Web Application & API Testing

Our consultants assess the security of your business-critical web applications and the APIs that connect them. By testing how these systems process data and manage user access, we identify vulnerabilities that could lead to unauthorised data access or unapproved changes to your systems.

cloud application penetration testing services

Cloud Service Configuration Testing

We review your Azure, AWS, or Microsoft 365 environments to ensure they are securely configured. Our focus is on identity management and access controls to prevent accidental data exposure and verify that your cloud services follow proven, safe configuration practices.

smishing, social engineering, cybersecurity awareness

Mobile App Security Testing

Your mobile applications are tested to identify vulnerabilities within the app and the backend services they connect to. We evaluate how your app manages user authentication, stores information on the device, and exchanges data to prevent unauthorised access and data leaks.

External Penetration Testing

Social Engineering Simulations

We simulate real-world deceptive attacks, such as phishing, to measure your organisation’s readiness. This reveals exactly how your team responds to threats, helping you address weaknesses in your internal security procedures and overall incident response.

Our Seamless, Safe & Proven 4 Step Process.

Our structured, four-step methodology is designed to provide maximum visibility into your vulnerabilities with zero impact on your daily operations.

Step 1

Scope & Schedule – We align with your team to define the technical objectives, communication channels, and strict Rules of Engagement (RoE) to ensure zero disruption to your environment.

Step 2

Active Controlled Testing – Our certified experts conduct controlled testing in accordance with our CREST approved testing methodology. Any critical-severity threats are escalated to your team in real time so you can act immediately.

Step 3

Analysis, Reporting and Technical Debrief – You receive a comprehensive report mapping vulnerabilities to CVSS risk. We then host a collaborative debrief session to walk your stakeholders through our findings and remediation strategies.

Step 4

Post Remediation Confirmatory Checks – When changes or remediation is required and conducted, we are available to re-check high priority vulnerabilities to verify they are fully resolved and ensure that the security improvement has worked as intended.

Security clarity you can act on

tick icon on Cyber Essentials product landing page

Fix what matters most

Automated scans waste time with false positives. Our consultant-led testing isolates genuine, exploitable vulnerabilities. You receive a clear, prioritised remediation roadmap to target your security budget where it impacts risk the most.

tick icon on Cyber Essentials product landing page

Boardroom-ready clarity

Cybersecurity shouldn’t get lost in translation. We bridge the gap between complex vulnerabilities and executive business risk with concise, jargon-free reporting. Give senior leadership and stakeholders the exact clarity they need to make strategic security decisions.

tick icon on Cyber Essentials product landing page

Satisfy external mandates

Secure your critical assets while effortlessly satisfying insurers, regulators, and compliance frameworks like PCI-DSS and ISO 27001. Our independent validation provides the definitive proof you need to pass upcoming audits smoothly.

tick icon on Cyber Essentials product landing page

Unlock supply chain contracts

Don’t let security gaps stall your growth. We provide the rigorous, CREST-accredited assurance required to clear procurement hurdles, ensuring you move decisively on your next tender from a position of verified strength.

Frequently Asked Questions

We have a tight deadline - how quickly can we get started?

Recognising that testing is often tied to a specific project milestone or an insurance renewal, our team prides itself on being highly responsive. We will work closely with you to define the scope and schedule your assessment as efficiently as possible. Once the testing is complete, we prioritise a collaborative debrief so you can understand the results and start making improvements without delay.

What is the difference between an automated vulnerability scan and your penetration testing?

Automated scanning uses software to detect known, surface-level security flaws, which can often result in false positives. Our consultant-led penetration testing combines these scans with manual exploitation by CREST-certified experts. We safely simulate real-world attacks to uncover complex business-logic flaws and privilege escalation pathways that automated tools cannot detect.

What can we expect to see at the end of the process?

You will receive a clear, prioritised roadmap and an executive summary that translates technical risks into plain English for your leadership team. We focus on providing actionable insight rather than just a list of problems, ensuring you have a practical plan to strengthen your security.

Is there a risk of our systems being disrupted during the test?

It’s a natural concern, which is why we take every precaution to protect your day-to-day operations. Our consultants lead with manual techniques and technical judgment to safely validate findings. We’ll always discuss the testing plan with you beforehand to ensure we can find your vulnerabilities whilst minimising any impact on your environment.

How do you ensure the findings are relevant to our specific business?

We don’t believe in one-size-fits-all testing. We start by understanding your organisation’s unique risks and drivers – whether that’s a contractual requirement or a specific concern about data. By manually verifying every finding, we remove false positives and ensure our advice is completely accurate and relevant to you.

How do we ensure the test satisfies our cyber insurance or compliance requirements?

Insurers and compliance auditors typically look for manual validation rather than just automated software scans. Because we are a CREST-accredited provider, our independent testing delivers the recognised level of scrutiny they expect, helping you clear these hurdles smoothly.

Do we need to do anything to prepare for the engagement?

We keep preparation simple. Once we’ve agreed on the scope, we’ll guide you through necessary technical requirements – like whitelisting or access provision – so that everything is in place for a smooth, stress-free assessment.

How often should penetration testing be performed?

The frequency of penetration testing depends on various factors, including your organisation’s risk profile, industry regulations, and the rate of system changes. Generally, it is recommended to conduct penetration testing at least annually or after any significant system modifications.

What are the standard penetration testing requirements for corporate and regulated supply chains?

A growing number of organisations are mandating independent penetration testing as part of their vendor risk assessments.

Many will stipulate that your penetration test is conducted by a CREST-approved provider to ensure that it is carried out to a high standard. This requirement is most prevalent in highly regulated sectors such as Financial Services & Banking, Government & Public Sector, Healthcare & Digital Health, Legal & Professional, and SaaS & Tech Infrastructure.

Cyber insurance has also become a massive driver for CREST testing across all sectors. Due to the skyrocketing costs of ransomware attacks, insurance underwriters frequently demand proof of an independent, accredited penetration test before issuing a cyber liability policy or to lower annual premiums.

Speak to one of our experts

Get a quote

Keeping security
simple

Get in touch with our expert consultants for straight-talking, jargon-free technical security advice.

Privacy Overview

This website uses cookies so that we can provide you with the best user experience possible. Cookie information is stored in your browser and performs functions such as recognising you when you return to our website and helping our team to understand which sections of the website you find most interesting and useful.

Strictly Necessary Cookies

Strictly Necessary Cookie should be enabled at all times so that we can save your preferences for cookie settings.

3rd Party Cookies

This website uses Google Analytics to collect anonymous information such as the number of visitors to the site, and the most popular pages.

Keeping this cookie enabled helps us to improve our website.