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Offensive Security, Mapped to Your Attack Surface.

A structured view of how your environment can be tested, from applications to infrastructure and beyond. Explore the areas below to understand where and how targeted testing can uncover risk across your organisation — each aligned to how attackers approach different entry points and pathways.

Offensive Security, Mapped to Your Attack Surface.

A structured view of how your environment can be tested, from applications to infrastructure and beyond. Explore the areas below to understand where and how targeted testing can uncover risk across your organisation — each aligned to how attackers approach different entry points and pathways.

Expert Led Penetration Testing with Clear, Actionable Results

We test a wide range of technologies, systems and environments including web, mobile, APIs, cloud platforms, internal and external networks, wireless infrastructure, applications and devices, Operational Technologies (OT), using real-world attacker techniques to simulate how breaches could occur across your organisation.

web app

Web Application Penetration Testing

We perform web application penetration testing for newly released platforms or routine compliance requirements, using certified specialists (OSCP, OSWE, OSCE) and established frameworks such as OWASP, supported by our CREST International accreditation and extensive vulnerability research.

mobile app

Mobile Applications Penetration Testing

Our mobile application penetration testing assesses security risks across iOS and Android platforms, ensuring applications used in sectors such as banking, government and retail cannot be compromised.

pentest

API Penetration Testing

API penetration testing evaluates the security of application programming interfaces by identifying authentication flaws, data exposure risks and logic vulnerabilities that could allow unauthorised access to systems or sensitive data.

code

Secure Code Review

Secure code review analyses application source code to identify security vulnerabilities, insecure coding practices and logic flaws before they can be exploited in production. Findings are validated by tying code‑level issues to practical testing, confirming whether vulnerabilities are actually exploitable within the running application.

client

Thick Client Pen Test

Thick client penetration testing evaluates the security of locally installed applications to identify vulnerabilities in authentication, data storage, communications and application logic.

hardware

Hardware, OT & IoT Penetration Testing

Evaluates the security of connected devices and embedded systems to identify weaknesses in firmware, communications and device configuration.

Infrastructure

network

External Network Penetration Testing

External network penetration testing evaluates your organisation’s internet-facing infrastructure, including servers, VPNs and services, applications, to identify vulnerabilities across the full external attack surface.

internal

Internal Network Penetration Testing

Internal network penetration testing identifies vulnerabilities, missing patches and privilege escalation risks that could allow attackers to move laterally within your environment if they gain internal access.

wireless

Wireless Networks Penetration Testing

Wireless penetration testing assesses the security of your onsite Wi-Fi networks to ensure configuration weaknesses cannot be exploited by attackers within range of your organisation’s wireless signals.

Human Risk and Social Engineering

social eng

Social Engineering

Social engineering testing assesses how employees respond to phishing, impersonation and other manipulation techniques used to gain access to systems or sensitive information. Engagements can also include controlled attempts to access secure physical locations, testing how social techniques translate into real‑world access risk.

Cloud Security Reviews

aws

Cloud Security Review — AWS

An AWS cloud security review evaluates configurations, identity and access management, logging and network controls to ensure the environment aligns with security best practices.

azure

Cloud Security Review — Azure

An Azure cloud security review assesses security posture, identity controls, resource configurations and monitoring to identify risks and strengthen protection across the environment.

m365

Cloud Security Review — Microsoft 365

A Microsoft 365 security review examines tenant configuration, identity controls, access policies and data protection settings to identify weaknesses that could expose organisational data.

Endpoint & Configuration Security

soe

Desktop SOE Review

A Desktop Standard Operating Environment (SOE) review assesses workstation configurations, security controls and patch management to identify weaknesses that could expose endpoints to compromise.

Offensive Security Operations

adv sim

Adversary Simulation

Adversary simulation emulates the tactics, techniques and procedures of specific threat actor groups relevant to an organisation’s industry and risk profile. Exercises are designed to test how well security teams can detect, respond to and contain targeted attacks they are most likely to face in the real world.

red team

Red Teaming

Red teaming is a full-scope security assessment that simulates a real-world attack against people, processes and technology to evaluate how effectively an organisation can detect and respond to sophisticated threats.

The Triskele Difference

What to Expect from Our Testing?

Our penetration testing is designed to reflect how real attackers operate, while giving your teams clarity, confidence, and actionable outcomes. From scoping through to reporting and retesting, we focus on meaningful findings, clear communication, and results you can act on — whether you’re addressing immediate risk, meeting regulatory requirements, or briefing senior stakeholders.

01


Custom Scoping with Dedicated Service Delivery Management

We take the time to understand your business, objectives, systems and risk profile, ensuring each engagement is scoped to what matters most. A dedicated Service Delivery Manager oversees delivery end‑to‑end, providing clear coordination and ensuring the engagement runs smoothly.

02


Advanced Tactics with Direct Access to Senior Testers

All testing is conducted by senior, certified practitioners using advanced tactics aligned to industry standards and extended through real‑world compromise knowledge drawn from active incident response, threat intelligence and offensive security operations.

03


Retesting, Remediation Verification and Ongoing Support

We verify that fixes have been applied correctly and that identified vulnerabilities have been effectively remediated. Retesting is supported by clear guidance throughout the patching process, helping teams close gaps confidently and reduce the risk of re‑occurrence.

04


Fast Turnarounds, But No Compromise on Quality

We deliver full‑scope testing with rapid turnaround times, without cutting corners on depth or rigour. Findings are prioritised clearly so teams can act quickly, while maintaining the quality required for assurance, remediation and executive reporting.

05


Trusted by industry leaders, led by offensive security experts

Our Pen Testing team includes highly certified specialists handpicked for their depth of experience and proven track record.

06


Board-ready reports with clear remediation paths

Our reports are designed for both technical teams and executives, delivering clear risk prioritisation and actionable remediation guidance. Findings are supported through close‑out meetings and walkthroughs, ensuring clarity for compliance, audit and risk committees.

Threat Research and Offensive Insights

Mythos or Panic?

Prepared by: Nick Morgan, Chief Executive Officer

Published: 24 April 2026

CVE-2025-2272 ForcePoint Endpoint DLP Privilege Escalation

What we found and why it matters?

Prepared by: Brecht Snijders, Principal Offensive Consultant

Published: 24 April 2026

Case Study: External penetration testing reveals exploitable gaps in pubic-facing infrastructure

Prepared by: Mike Higgo, Head of Offensive Security

Published: 24 April 2026

When Experience Matters
GIAC Security Essentials (GSEC) 1
GIAC Security Essentials (GSEC) 2
GIAC Security Essentials (GSEC) 3
GIAC Security Essentials (GSEC) 4
GIAC Security Essentials (GSEC) 5
GIAC Security Essentials (GSEC) 6
GIAC Security Essentials (GSEC) 7
GIAC Security Essentials (GSEC) 8
GIAC Security Essentials (GSEC) 9

Ready to Uncover Your Vulnerabilities?

Whether you're securing customer data, protecting regulated systems or meeting compliance requirements, proactive Penetration Testing is essential. Get in touch with one of our team members today.