Penetration testing that adapts to your world

We don’t just scan. We simulate real-world attacks so you can fix what matters before it’s exploited.

What is penetration testing?

Penetration testing (or ‘pen testing’) is a controlled simulation of a cyber attack. It’s how we identify weaknesses in your systems, applications or infrastructure, before real attackers do.

Cyber threats don’t follow a script, and neither do we. At Resillion, our pen testing services are designed to uncover the vulnerabilities that matter most to your business, whether you’re running a cloud-native platform, a telecom network or a drone fleet.

Unlike automated scans, our approach is hands-on, adaptive and tailored to your environment. We test like real attackers would, across:

  • web, mobile and desktop applications
  • cloud and hybrid infrastructure
  • internal and external networks
  • IoT, OT and connected devices
  • unusual or complex systems, including drones and cranes
Female software engineer writing code on monitors

Why Resillion?

Our team has more than two decades of penetration testing experience in sectors like telecoms, energy and public infrastructure where failure isn’t an option

Here’s what sets us apart:

  • real-world simulation – not just scans, but attacker-style testing
  • custom scoping -we help you define what matters most
  • non-standard expertise – from buses to gantry cranes, we’ve tested it
  • clear reporting – actionable insights for both tech teams and execs
  • global reach – remote or on-site, we’ve got you covered
  • no conflicts of interest – we test, you fix. No upselling.
Digital forensics being conducted in a data centre

We tested a drone, a gantry crane, even telecom equipment - things most firms wouldn't touch. That's what makes us different.

Dirk-Jan Bartels, Resillion

We can test anything. If it connects, we can test it. But here’s what we’re known for:

IT systems

Web apps, APIs, cloud platforms and internal networks

OT environments

Industrial control systems, SCADA and IoT

Devices

Drones, telecom hardware and transport systems

Hybrid setups

Complex infrastructures with legacy and modern tech

Who we help

We work with organisations that care about security.

Red Team exercise for a large UK public sector organisation

Banks and Fintech

Risk-driven and audit-ready

Wind turbines

Energy and Utilities

Securing critical infrastructure

Skyscrapers

Public sector

Meeting strict compliance standards

Implement Automation

Healthcare

Protecting patient data and uptime

Exec presenting cyber consulting services

Enterprises and scale-ups

Building trust through resilience

Manufacturing plant with robotic arms

Logistics and Manufacturing

Minimise downtime and protect critical operations

Security that’s fast and efficient

Resillion’s Powerhouse Pentesting is a solution designed for speed, efficiency and effectiveness. It makes security testing for modern digital businesses faster, leaner and smarter. Whether it’s a one-off test or part of your compliance cycle, we make it easy.