Penetration Testing

Hardware and IoT

Identify vulnerabilities in IoT devices and embedded systems to prevent exploitation and secure physical and digital assets.

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Objective
firmware, communication and physical access weaknesses
Maturity
devices from development through to deployment
Approach
full-stack testing from firmware to cloud
Result
a resilient connected device ecosystem

Securing the connected world

As IoT adoption and embedded systems continue to expand across industries, hardware vulnerabilities pose an increasing risk to organisations. From consumer IoT devices to industrial control systems (ICS) and custom embedded products, attackers target misconfigurations, weak firmware, and insecure communication channels to gain unauthorised access or disrupt operations.

SilentGrid's Hardware and IoT Penetration Testing evaluates the security of embedded systems, IoT devices, and hardware products to uncover vulnerabilities at the firmware, communication, and physical access layers. Our goal is to ensure your hardware and IoT ecosystems are resilient against attacks that target the intersection of physical and digital security.

What sets us apart

End-to-end IoT and hardware testing

We assess IoT ecosystems across the full stack, from firmware analysis and hardware debugging to API security and cloud interaction. This ensures vulnerabilities are identified across all components of the IoT infrastructure.

Embedded systems expertise

Our team brings deep knowledge of embedded architectures, reverse engineering, and custom hardware exploitation, allowing us to identify weaknesses at the binary, bootloader, and kernel levels.

Real-world attack simulation

SilentGrid simulates real-world attack scenarios targeting IoT ecosystems and hardware devices: firmware reverse engineering and modification, hardware-based attacks (JTAG, UART, SPI, I2C), wireless protocol exploitation (Bluetooth, Zigbee, LoRa, NFC), and physical tampering and side-channel attacks.

Testing standards and frameworks

SilentGrid's hardware and IoT testing aligns with leading industry frameworks to ensure comprehensive and rigorous testing:

OWASP IoT Top 10

Addressing the most critical IoT vulnerabilities

MITRE ATT&CK for ICS

Focusing on industrial control system threats

NIST 8259

IoT device cybersecurity guidance

CWE (Common Weakness Enumeration)

Identifying common weaknesses in embedded and IoT software

Methodology

Our approach evaluates vulnerabilities across the hardware lifecycle, from development to deployment.

  1. 01

    Hardware reconnaissance and threat modelling

    • Identifying exposed interfaces (e.g., JTAG, UART) and insecure boot configurations
    • Assessing device architecture, chipsets, and embedded operating systems
  2. 02

    Firmware extraction and analysis

    • Extracting and reverse-engineering firmware to identify backdoors, hardcoded credentials, or insecure code
    • Testing for buffer overflows, command injection, and privilege escalation opportunities
  3. 03

    Communication and protocol testing

    • Testing communication protocols (Bluetooth, Zigbee, Wi-Fi, MQTT, etc.) for vulnerabilities
    • Simulating man-in-the-middle (MITM) attacks on data flows between devices and cloud platforms
  4. 04

    Physical and side-channel analysis

    • Conducting physical tampering assessments to evaluate access controls and hardware resilience
    • Testing for voltage glitching, electromagnetic interference (EMI), and chip-level attacks
  5. 05

    Cloud and API integration testing

    • Assessing IoT cloud services and backend APIs for misconfigurations, authentication issues, and data exposure risks

Why IoT and hardware security matters

IoT and embedded devices often interact with sensitive environments, including critical infrastructure, healthcare, smart cities, and enterprise networks. A single compromised device can facilitate lateral movement within corporate environments, expose sensitive data through insecure storage or transmission, enable remote code execution and persistent backdoors, and lead to operational disruption through attacks on industrial IoT (IIoT) or OT systems.

Ensuring robust hardware and IoT security protects not only device functionality but also the broader network and services they interact with.

Test it again

Test the device once, and again after the fix.

A single hardware and IoT test covers a device from firmware to the cloud services it talks to. When new firmware ships, a follow-up test confirms the fixes held and checks what changed.

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Deliverables and reporting

SilentGrid's hardware and IoT assessments provide critical insights to product teams, ensuring secure development and deployment of connected devices.

Comprehensive vulnerability report

Documenting security risks across firmware, hardware, and communication channels

Proof of concept (PoC)

Demonstrations of successful hardware, firmware, or communication exploits

Remediation guidance

Detailed recommendations to address vulnerabilities at the hardware, software, and API levels

Executive summary

High-level overview of findings and risks for non-technical stakeholders

Consultation and support

Post-assessment support to assist engineering teams in securing hardware products

Why SilentGrid

SilentGrid's consultants are hand-picked, and between them they have delivered penetration testing globally over decades. Their sector experience covers banking and financial services, insurance, government, critical infrastructure and healthcare, so an assessment is read against how the systems in question are actually run.

Consultants find 0-day vulnerabilities in commercial software and speak or teach at security conferences. That research produces the custom tooling used to reach the flaws automated scanning leaves behind, and it keeps the techniques current. Testing follows concepts set out in NIST, OWASP, PTES and OSSTMM.

CREST ANZApproved company

Individual credentials across our team include

  • OSEE
  • OSCE3
  • OSED
  • OSEP
  • OSWE
  • GXPN
  • CRTO
  • CRTE
  • CRTP
  • OSCP
Meet the team

Common questions

What is hardware and IoT penetration testing?

Hardware and IoT penetration testing examines connected devices the way an attacker with the device in hand would: probing JTAG and UART interfaces, extracting and reverse engineering firmware, attacking Bluetooth, Zigbee, Wi-Fi and MQTT communications, attempting physical tampering and side-channel attacks such as voltage glitching, and testing the cloud services and APIs the device relies on.

What does hardware and IoT testing cover?

The full stack: firmware analysis and hardware debugging, communication and wireless protocols, physical and side-channel attacks, and the cloud services and backend APIs the devices talk to.

Do you test the physical device itself?

Yes. Exposed interfaces such as JTAG and UART are identified, insecure boot configurations assessed, physical tampering used to evaluate access controls and hardware resilience, and voltage glitching, electromagnetic interference and chip-level attacks tested.

Which wireless protocols do you test?

Bluetooth, Zigbee, Wi-Fi, MQTT, LoRa and NFC among others, including man-in-the-middle attacks against data flows between devices and cloud platforms.

Do you need the firmware source?

No. Firmware is extracted and reverse-engineered to identify backdoors, hardcoded credentials and insecure code, and tested for buffer overflows, command injection and privilege escalation opportunities.

Which standards does the testing align with?

The OWASP IoT Top 10, MITRE ATT&CK for ICS, NIST 8259 device cybersecurity guidance, and the Common Weakness Enumeration for embedded and IoT software.

Why does a single device matter?

IoT and embedded devices interact with sensitive environments such as critical infrastructure, healthcare, smart cities and enterprise networks. One compromised device can facilitate lateral movement, expose sensitive data, enable remote code execution and persistent backdoors, or disrupt operations on industrial IoT and OT systems.

What do we receive at the end?

A vulnerability report covering firmware, hardware and communication channels, proof-of-concept demonstrations, remediation guidance at hardware, software and API levels, an executive summary, and post-assessment consultation for the engineering team.

Secure your IoT ecosystem

Get started with hardware and IoT security

Protect your connected devices from evolving threats

Secure your IoT devices and embedded systems from evolving threats.