Next-Day Pen Testing

Next-Day Pen Testing

When deadlines are tight and compliance can’t wait, CyberLab delivers. Our CREST-accredited testers can begin your penetration test in as little as 24 hours – without compromising on quality or detail.

Next-Day Pen Testing

When deadlines are tight and compliance can’t wait, CyberLab delivers. Our CREST-accredited testers can begin your penetration test in as little as 24 hours – without compromising on quality or detail.

I’d recommend CyberLab not just for their expertise in the whole cyber security area, but for their personalised and professional approach.

Mark Smith, Server Support Manager, Nottingham City Council

Meet The CyberLab Team

Decade of Expertise

CyberLab’s penetration test team, previously Armadillo Sec, has been in the industry for close to a decade

Highly Certified Team

14 strong test team – 7 CHECK team leaders – 6 CTM’s

Expertise You Trust

Senior consultants over 15 years penetration testing experience

Top Firm Backgrounds

Consultants who have worked for the UK’s biggest security companies

SC Level Cleared

Consultants are Security Check (SC) cleared (Secret and Supervised Top Secret)

Fully Vetted Consultants

Team of NPP V3 police cleared consultants

Our Most Popular Pen Testing Services

External Infrastructure Pen Testing

Internal Infrastructure Pen Testing

Cloud Security Reviews

Azure/ Microsoft 365, AWS, Google

Web Application Pen Testing

Web Sites, Web Applications, Mobile Apps, API’s

Red Team Testing, Scenario or Threat Simulation Testing

Why Should You Choose CyberLab?

Thousands of organisations across the UK trust us.

CREST & CHECK Accredited

We are CREST and CHECK Green Light testing company: Not all Test companies are both.

CREST Infrastructure

Not all test companies have App testing.

Experienced & Senior Consultants

Senior consultants with over 15 years of industry experience

5-Star Communication Throughout

We create Slack channels for direct team communication.

Clear and Concise Reports

Easy to understand reports
with detailed findings and recommendations

Specialised Testing Teams

We have specialist teams for Cloud, Application and API testing

Developer-Testers for Deeper Testing

Our testers are ex-developers who use coding knowledge for deeper testing.

We Save You Time and Money

Provide higher quality testing in less time (clients tell us this)

Backed by Our Customers

We’re rated Excellent on Trustpilot

80%

of our business is repeat business.

96%

of asked customers would recommend our team to a friend

A great place to work and be a customer

Penetration testing methodology and process

The way we structure our Pen Tests aligns closely with the steps taken by bad actors to target and compromise your systems. We replicate the approach of real-world adversaries to simulate and evaluate how your systems and processes respond to a cyber attack.

1. Planning and Scoping

2. Research, Reconnaissance and Enumeration

3. Threat Analysis

4. Exploitation

5. Reporting

6. Remediation


One of our CREST, CHECK, and Cyber Scheme certified consultants will work with you to define the scope of the engagement and ensure that our tests will fulfil your requirements.

Your assigned consultant will gather information on your organisation, including:

  • IP addresses of websites and MX records
  • Details of e-mail addresses
  • Social networks
  • People search
  • Job search websites

This information will assist in identifying and exploiting any vulnerabilities or weaknesses.

Within the Threat Analysis stage we will identify a range of potential vulnerabilities within your target systems, which will typically involve a specialist engineer examining:
  • Attack avenues, vectors, and threat agents
  • Results from Research, Reconnaissance and Enumeration
  • Technical system/network/application vulnerabilities
We will leverage automated tools and manual testing techniques at this stage.

Once we have identified vulnerabilities, we will attempt to exploit them in order to gain entry to the targeted system.There are three phases to this stage:

Exploit – use vulnerabilities to gain access to a system, e.g. inject commands into an application that provide control over the target.

Escalate – attempt to use the exploited control over the target to increase access or escalate privileges to obtain further rights to the system, such as admin privileges.

Advance – attempt to move from the target system across the infrastructure to find other vulnerable systems (lateral movement) potentially using escalated privileges from target systems and attempting to gain further escalated privileges and access to the network.

Your Penetration Test Report will detail any identified threats or vulnerabilities, as well as our recommended remedial actions. Threats and vulnerabilities will be ranked in order of importance. The report will also contain an executive summary and attack narrative which will explain the technical risks in business terms. Where required, we can arrange for your CyberLab engineer to present the report to the key stakeholders within your organisation. You can download an example Penetration Test report.
The report will provide information on remedial actions required to reduce the threats and vulnerabilities that have been identified. At this stage, we can provide you with the additional consultancy, products, and services to further improve your security posture.

One of our CREST, CHECK, and Cyber Scheme certified consultants will work with you to define the scope of the engagement and ensure that our tests will fulfil your requirements.

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Strategy and Flexibility

Flexible, Scalable Support

CyberLab is large enough for complex projects yet small enough to stay flexible and work as an extension of your security team.

Building Lasting Security

We work with clients to develop long term security
strategies.

From Strategy to Action

We help turn that strategy into preplanned and scheduled
projects.

Smart Testing Bundles

Bulk testing days cut admin, cover BAU or urgent needs, allow add-ons, and roll over unused time.

From Risk to Resolution

A Penetration Test report details any threats or vulnerabilities found and suggests the recommended remedial actions. Threats and vulnerabilities will be ranked in order of criticality. The report will also contain an executive summary and attack narrative which will explain the risks in business terms.

Our Vendor Partners

We work closely with the market leading cyber security vendors to build solutions that will keep your systems safe. By leveraging our vendor relationships you can expect the highest quality of advice and guidance at the best possible price point.

Penetration Testing FAQs: Comprehensive Guide for Businesses

Penetration testing (also known as pen testing) is a simulated cyberattack designed to identify and exploit vulnerabilities in your IT systems. It helps organizations:

  • Detect security weaknesses before attackers do
  • Evaluate incident response capabilities
  • Ensure compliance with cybersecurity standards
  • Improve staff awareness and security posture

CyberLab’s approach is built around Detect. Protect. Support., ensuring proactive and strategic security.

CyberLab provides a wide range of penetration testing services, including:

  • External Infrastructure Testing
  • Internal Infrastructure Testing
  • Cloud Security Reviews (Azure, AWS, Google Cloud)
  • Application Testing (Websites, Web Apps, Mobile Apps, APIs)
  • Red Teaming and Threat Simulation

Specialist teams include ex-developers who bring deep technical insight into application and API testing.

CyberLab’s penetration testing team is:

  • CREST, CHECK, and Cyber Scheme Certified
  • Composed of 14 testers, including 7 CHECK Team Leaders and 6 CTMs
  • Experienced with over 15 years in the industry per senior consultant
  • Cleared for Security Check (SC) and NPP V3 Police vetting

This ensures high-quality, trusted testing across sectors and industries.

CyberLab stands out due to:

  • Dual CREST & CHECK accreditation
  • App and API testers with development backgrounds
  • Clear, actionable reports tailored for technical and non-technical audiences
  • 5-star communication via Slack or Teams
  • Flexible bulk purchase model for testing days
  • Trusted by thousands of UK organizations

Penetration testing costs vary based on scope, complexity, and type of test.

CyberLab offers bulk purchase options for testing days, allowing flexible use across business-as-usual and urgent projects, reducing administrative overhead.

Feature Vulnerability Assessment Penetration Testing
Purpose Identify known vulnerabilities Simulate real-world attacks
Method Automated scanning tools Manual and automated testing
Depth Surface-level In-depth exploitation
Output List of vulnerabilities Detailed report with risk ratings and remediation
Use Case Regular checks Compliance, risk validation, strategic security
CyberLab’s penetration testing includes manual validation and exploitation for deeper insights.
  1. Planning & Reconnaissance
    Define scope, objectives, and gather intelligence (e.g., domain names, IPs).
  2. Scanning
    Identify live hosts, open ports, and vulnerabilities using automated tools.
  3. Gaining Access
    Exploit vulnerabilities to simulate attacker behavior and gain control.
  4. Maintaining Access
    Test persistence techniques and evaluate how long an attacker could remain undetected.
  5. Analysis & Reporting
    Deliver a comprehensive report with findings, risk ratings, and remediation steps. CyberLab ensures clarity and support throughout this phase.

Penetration testing should be performed:

  • Annually
  • After major system changes
  • Before launching new applications
  • When required by compliance standards

CyberLab supports long-term security strategies with preplanned and scheduled testing.

No. CyberLab’s consultants work flexibly and communicate clearly to minimize disruption. Testing can be scheduled during off-peak hours and tailored to your environment.

CyberLab provides:

  • A detailed report with findings and remediation guidance
  • A debrief session with testers
  • Ongoing support for issue resolution

Our commitment to Detect. Protect. Support. ensures continued security improvement.

Speak With an Expert

Enter your details and one of our specialists will be in touch. Whether you’re looking to implement basic cyber security best practice, improve your existing defences, or introduce a new system or solution, our team of expert consultants, engineers, and ethical hackers are here to help. Our team specialise in creating bespoke security solutions and testing packages to improve and maintain your security posture. We are 100% vendor agnostic and will only ever recommend the best products and solutions for your requirements.