Penetration Testing
Find your weaknesses before attackers do.
Expert UK-based ethical hackers test your network, web apps and cloud — then give you a clear, prioritised plan to fix what matters most. Free retest included.
Delivered by the cyber security specialists at Fresh Mango Technologies.

What it is
Penetration Testing, explained plainly.
Penetration testing (or 'pen testing') is a controlled, ethical attempt to break into your systems the same way a real attacker would. Our CREST-aligned testers identify exploitable weaknesses and give you a clear, costed plan to close them.
Why it matters
The business risk if you don't act.
Automated scanners only catch low-hanging fruit. A real attacker chains together small weaknesses into a full compromise — and so do we, before they get the chance.
Required for PCI-DSS, ISO 27001 and many client contracts
Increasingly requested during cyber insurance renewals
Uncovers weaknesses that scanners and audits miss
Demonstrates proactive due diligence to stakeholders
What's included
Everything you need, in one service.
- External network penetration testing
- Internal network and Active Directory testing
- Web application and API testing
- Cloud configuration review (Microsoft 365, Azure, AWS)
- Executive summary plus detailed technical report
- Free retest after remediation to prove fixes
How it works
A simple, proven process.
- 1
Scope
We agree the scope, targets and rules of engagement with you in writing.
- 2
Test
Our UK testers safely attempt to compromise your systems using current attacker techniques.
- 3
Report
You receive a prioritised report with both an executive summary and clear technical detail.
- 4
Retest
Once you've remediated, we retest the findings free of charge to confirm they're fixed.
Who it's for
Built for SMEs in the UK, BVI & USA.
Any SME across the UK, BVI and USA with internet-facing systems, regulated data, or contractual obligations to test — particularly in finance, legal, healthcare, ecommerce and SaaS.
- PCI-DSS or ISO 27001 certified businesses
- SaaS and ecommerce platforms
- Finance, legal and healthcare providers
- Anyone preparing for a major client audit
Investment
From £2,950 per engagement
Fixed-fee engagements scoped to your environment. Pricing depends on the size and complexity of your network or application — we give you a clear quote upfront.
FAQ
Common questions about Penetration Testing.
What does a penetration test involve?
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A penetration test is a controlled, authorised attack on your systems carried out by qualified ethical hackers. We scope the target — network, web app, cloud environment, internal estate or staff — attempt to compromise it using the same techniques real attackers use, and deliver a written report ranking each finding by risk with clear remediation steps.
How does penetration testing work from start to finish?
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We agree scope, targets and rules of engagement with you in writing, then our UK testers safely attempt to compromise your systems over an agreed window. You receive a report with an executive summary and detailed technical findings, and once you've remediated, we retest those findings free of charge to confirm they're genuinely fixed.
Why should we pay for a pen test instead of relying on antivirus and firewalls?
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Antivirus and firewalls only block known, obvious threats; a skilled attacker chains together several small weaknesses — a misconfigured server, a weak password policy, an outdated plugin — into a full compromise. A penetration test finds and demonstrates that chain before a criminal does, which automated tools and everyday IT controls simply can't replicate.
How much does a penetration test cost?
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Engagements start from around £2,950 and are priced as a fixed fee scoped to the size and complexity of your network, application or cloud environment. We always agree a clear, upfront quote after a short scoping conversation so there are no surprises once testing begins. Cost is driven by the number of IP addresses, applications or cloud tenants in scope, plus whether you need internal, external or web application testing. The fee includes the full report, a debrief call and one free retest of remediated issues, so you are not charged twice to prove a fix worked.
How long does a penetration test take?
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Most SME engagements run from a few days to around two weeks of active testing, depending on scope, followed by report writing. From initial scoping call to final report, businesses typically allow 3–4 weeks in total, with the free retest scheduled once remediation is complete. We agree the testing window with you in advance, including any out-of-hours requirements, and provide immediate notification if a critical vulnerability is found rather than making you wait for the report.
Is penetration testing only for larger organisations?
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No. SMEs are now a primary target for opportunistic ransomware and supply-chain attacks precisely because they assume they're too small to be worth attacking. We run right-sized, fixed-scope tests built for SME budgets rather than enterprise-only engagements. A small business running Microsoft 365, a customer-facing website and remote workers has a genuine attack surface. Testing it once a year, or after significant change, is usually the cheapest way to find out what an attacker would find first. Many SMEs also need a test to satisfy insurers, tender requirements or larger customers in their supply chain.
How does a pen test compare with automated vulnerability scanning?
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Automated scanners only catch known, low-hanging vulnerabilities and generate lots of noise. A pen test involves a skilled human deliberately chaining weaknesses together to see how far a real attacker could actually get, which reveals business-critical risks that scanning alone consistently misses. A scanner will not spot broken access control, flawed business logic or a chain of three minor issues that together expose customer data. Both have their place: scanning gives continuous coverage between tests, while a pen test gives assurance and evidence at a point in time.
Will testing disrupt our business or systems?
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No. Testing is carefully scoped and timed to avoid operational impact, and any potentially disruptive or destructive techniques are only ever run with your explicit prior approval, so day-to-day operations continue as normal throughout. Where a system is business-critical, we can test outside working hours or against a staging copy. You get a named tester and a direct contact throughout, so if anything unexpected occurs it can be paused immediately.
Before you buy
Costs, risks and misconceptions.
The questions buyers actually ask about Penetration Testing — what it costs to budget for, what happens if you do nothing, and the assumptions that most often turn out to be wrong.
What makes one pen test quote much higher than another?
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Scope and tester days, almost entirely. A quote is built from the number of targets — external IP addresses, applications, user roles, internal networks — and how deeply each is tested. A cheap quote often means an automated scan with a report wrapped around it, or a very narrow scope. When comparing quotes, compare the number of days, the tester qualifications, and whether a retest after remediation is included, rather than the headline figure.
What is the risk of relying on scans and never commissioning a test?
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Automated scanners find known missing patches and misconfigurations. They do not chain small issues into a real attack path, and they rarely find business-logic flaws such as a user being able to view another customer's records by changing an ID. Those are the issues that cause reportable breaches. Without testing you also have no independent evidence for clients or insurers, and no verification that the controls you believe are in place actually work.
Is a penetration test the same as a vulnerability scan?
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No, and the two are often confused. A vulnerability scan is automated, fast, cheap and repeatable, and reports known weaknesses. A penetration test is manual work by a tester who validates findings, discards false positives, and attempts to exploit and chain issues to demonstrate real impact. The right answer for most SMEs is both: continuous scanning for coverage, and a periodic test for depth.
Will a clean test report mean our systems are secure?
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It means the tested scope had no exploitable issues found within the agreed time, on that date. Anything out of scope was not examined, and a change deployed the following week is untested. Treat a report as a point-in-time snapshot of a defined boundary rather than a certificate of security, and retest after significant changes to the systems that matter most.
Who sees the report, and can we share it with a client?
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The report is yours. It is delivered to your named contacts and covered by our confidentiality obligations, and we do not disclose findings or your identity to anyone else. Clients and prospects often ask for evidence of testing, so we can also provide a summary or attestation letter that confirms the test took place and the scope covered, without exposing unresolved technical detail to a third party.
What happens after the report — is remediation and retesting included?
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We walk you or your IT provider through the findings, prioritised by real risk rather than raw scanner severity, so you know what to fix first. Whether remediation work is included depends on what you have asked us to do; we will state this clearly in the proposal rather than leaving it ambiguous. A retest of the fixed issues is the step most organisations should insist on, because it is the only proof the remediation actually worked.
Explore related cyber security services
Most SMEs combine penetration testing with a wider set of managed controls. Here's where to look next.
Next step
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Book a free cyber security review
30 minutes with a UK specialist — a plain-English view of your risks and next steps.
Related case studies
All case studiesWhere we deliver Penetration Testing
We support SMEs across Yorkshire, the wider UK, the British Virgin Islands and the US. These pages cover the areas where we work on site.
Who delivers this work
Complete Cyber Security is part of Fresh Mango Technologies, with offices in the UK and BVI.
Two ways to get started
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