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IT and security

Penetration testing services for business risk reduction

UK-based penetration testing to uncover vulnerabilities, support compliance, and reduce downtime risk across your modern IT estate

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The challenges we remove from penetration testing

Businesses come to us because they’re tired of delays, generic reports, and outsourced testing. Our in-house team works fast, delivers real findings, and helps fix them properly. Simple as that.
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Rapid results with clear communication

We work efficiently with integrated communication and teams, minimising delays and avoiding unnecessary paperwork and tedious back-and-forth.

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Work with real UK based experts

We don’t subcontract or white-label. Every test is delivered by our UK-based in-house experts.

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Findings that come with a fix

We empower you with actionable steps, clear ownership, and priorities that inspire your team to achieve greatness.

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Attacker led testing business risk

Our approach mirrors real-world attackers. We use the same tools and techniques criminals do, not just automated scans.

Whats included in our Penetration Testing Service?

Web app testing

Covers common OWASP risks and business logic issues
Web app testing

Nationwide Onsite Support

Identifies lateral movement paths and privilege escalation
Nationwide Onsite Support

External perimeter testing

Simulates public-facing threat vectors and exploits
External perimeter testing

Cloud environment testing

Finds misconfigurations, poor identity design, and overexposed services
Cloud environment testing

Mobile app testing

Assesses mobile-specific flaws across iOS and Android
Mobile app testing

Human-layer testing

Includes phishing, vishing, and physical intrusion
Human-layer testing

Risk-based reporting

Highlights real-world risk, not just CVSS scores

Risk-based reporting

Remediation guidance

Step-by-step actions with clear priorities

 

Remediation guidance

Compliance-ready outputs

Supports ISO 27001, Cyber Essentials, PCI DSS, and SOC 2

Compliance-ready outputs

How we deliver

Uncover the underlying layers of our 24/7 support model.

Scoping

Enjoy a streamlined process with no delays or back-and-forth communication. You will receive a comprehensive test plan outlining the steps involved, transparent pricing details that clearly break down costs, and a well-defined schedule that keeps you informed and on track, all provided to you promptly.

Speed
Clarity
Access

Execution

Our testing process is expertly carried out by our CREST-certified team based in the UK. We utilise real-world attack simulations to replicate potential threats and vulnerabilities, followed by thorough manual validation to ensure robust security measures. 

Expertise
Coverage
Integrity

Reporting

Reports clearly present findings by priority, enabling your team to address issues swiftly. They include executive summaries and audit support. The reports are compliant and align with ISO 27001, Cyber Essentials, and SOC 2 standards.

Clarity
Support
Actionability

Retesting

Once you’ve addressed the findings, we can confidently retest to verify the fixes and present compelling evidence for the auditors.

Reassurance
Proof
Continuity

Ongoing Improvement

We use our findings to recommend broader resilience improvements, integrations, and roadmap changes designed to enhance security and facilitate faster remediation and response actions in the event of an attack.

Roadmap
Insights
Partnership

How does Conosco compare?

Conosco not only empowers you, but we go above and beyond to give you the best possible service.
Features
Conosco
Typical Penetration Test Partner
In-house UK testers
✅ CREST-certified team in-house
⚠️ Offshore, white-labelled delivery
Speed to quote
✅ Streamlined internal process to facilitate rapid quoting
⚠️ Delayed, passed around departments and teams
Compliance coverage
✅ Mapped to ISO, CE+, PCI SOC 2
⚠️ Often only focused on one compliance framework
Executive reporting
✅ Reports built for technical and non-technical in mind
⚠️ Technical only, no business context
Delivery timelines
✅ Testing starts without delay
⚠️ Long lead times, complex scheduling
Remediation support
✅ Real world steps with no forced upsells
⚠️ Often just an excuse to upsell security products
Retest availbility
✅ Optional retest for fix validation
🚫 Rare or not offered
Real attack methods
✅ Manual simulation and chaining
⚠️ Automated tools only

Results that speak for themselves

See how our penetration testing services have helped businesses reduce risk, meet compliance goals, and improve security outcomes
After onboarding, this legal firm reduced open vulnerabilities by 76% and passed its ISO 27001 audit with zero remediations. Test scope covered internal, web, and Microsoft 365.
Legal Sector
120 staff, hybird firm
Following an external test, this Logistics team found and closed a critical public-facing credential leak. Risk of breach dropped significantly, helping them renew a key contract.
Logistics and Supply Chain
UK-wide fleet, 15 depots
A private care provider met Cyber Essentials Plus on the first attempt after remediating 29 high-severity issues from Conosco pen test. Incident response time halved.
Private healthcare provider
300 employees, regulated environment
Vulnerabilities in customer login flow were exploited during testing, not in production. Fixes were applied in days, and support desk saw a 33% drop in incident tickets.
Retail e-commerce
400 endpoints

FAQ

How often should penetration testing be done in the UK?
UK businesses are advised to test at least annually, or after significant infrastructure or application changes. Regulatory frameworks like ISO 27001 and Cyber Essentials also recommend routine assessments.
What’s the difference between internal and external penetration testing?

Internal testing simulates an attacker with access to the internal network, often through phishing or physical access. External testing focuses on public-facing assets like websites and VPNs.

 

Is penetration testing required for ISO 27001 certification?
ISO 27001 doesn’t mandate penetration testing, but it strongly recommends it as part of ongoing risk assessments and control validation under Annex A.12 and A.18.
Can penetration testing help us achieve Cyber Essentials Plus?
Yes. Conosco’s tests identify the kinds of real-world exploits CE+ assessments often look for, especially around patching, account segregation, and exposed services.
How long does penetration testing take to complete?
Most tests take between 2 and 10 working days depending on scope. We work with your team to schedule around operations and minimise disruption.
Do you offer penetration testing for cloud platforms like Azure or AWS?
Yes. We assess cloud identity management, access policies, configuration issues, and publicly exposed services across Azure, AWS, and hybrid environments.
What qualifications do your penetration testers hold?
All tests are performed by our UK-based team with CREST certifications and specialist OSCP/OSWA-level expertise. We don’t outsource or white-label.
Do you offer remediation assistance after the test?
Yes. Our reports include step-by-step remediation plans, and our team is available for consults or technical guidance post-test.
How much does penetration testing cost in the UK?
Costs vary depending on scope, but we offer fixed-price, transparent proposals with no hidden fees. Contact us for a tailored quote.
Is penetration testing different from a vulnerability scan?
Very. Vulnerability scanning is automated and surface-level. Pen testing involves manual techniques, chaining vulnerabilities, and real-world attack simulation.
Ready to book your penetration test?

Penetration testing services that deliver clarity, speed, and real-world risk reduction

Fast, actionable UK-based penetration testing across cloud, network, and application environments. Built for compliance. Delivered without delays.

Get a quote

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