Webcast: The Technology Behind PowerFuzzer | AI-Powered Firmware Validation and Side-Channel Analysis
- Sebastian Fischmeister
- May 1
- 2 min read
Updated: 3 days ago
Firmware is one of the most difficult parts of modern electronics to validate. Organizations increasingly rely on software developed by suppliers, third-party vendors, and commercial-off-the-shelf (COTS) manufacturers, yet they often have little visibility into how that firmware was built, what functionality it contains, or whether it has changed over time.
Traditional testing methods typically evaluate firmware through documented interfaces and expected responses. They help answer whether a system behaves correctly under known conditions. They do not always answer a more important question:
Is the firmware actually doing what it claims to be doing?
That challenge is what inspired the development of PowerFuzzer.
In this webcast, Sebastian Fischmeister explains the technology behind PowerFuzzer and how it combines AI-powered fuzzing with power side-channel analysis to assess firmware without requiring source code access.
Get Firware Validation By Using Power Consumption to Understand Firmware Behaviour
At its core, PowerFuzzer is built on a simple observation:
Computers consume power differently depending on the work they perform.
Every command received by an embedded system triggers activity inside the device. Some commands are accepted and processed. Others are rejected. Some may invoke functionality that is undocumented or unexpected.
Although two commands may appear similar when viewed through a communication interface, the internal processing required to handle them can be very different.
PowerFuzzer captures and analyzes those differences.
By monitoring power consumption while firmware processes inputs, PowerFuzzer gains an additional source of evidence about what the device is doing internally. This allows it to distinguish between commands that may appear similar externally but trigger different execution paths inside the firmware.
The result is a deeper form of firmware assessment that goes beyond traditional response-based testing.
Watch the Full Webcast
In this session, Sebastian Fischmeister provides a technical overview of the principles behind PowerFuzzer, including:
The challenge of firmware assurance in modern supply chains
Known knowns, known unknowns, and unknown unknowns in cybersecurity risk management
Why power consumption can reveal hidden firmware activity
How PowerFuzzer combines AI and physics-based analysis
Methods for identifying undocumented functionality and firmware changes
Applications for compliance testing, supplier validation, and cybersecurity assurance
Get Firmware Validation By Using Power Consumption to Understand Firmware Behaviour
At its core, PowerFuzzer is built on a simple observation:
Computers consume power differently depending on the work they perform.
Every command received by an embedded system triggers activity inside the device. Some commands are accepted and processed. Others are rejected. Some may invoke functionality that is undocumented or unexpected.
Although two commands may appear similar when viewed through a communication interface, the internal processing required to handle them can be very different.
PowerFuzzer captures and analyzes those differences.
By monitoring power consumption while firmware processes inputs, PowerFuzzer gains an additional source of evidence about what the device is doing internally. This allows it to distinguish between commands that may appear similar externally but trigger different execution paths inside the firmware.
The result is a deeper form of firmware assessment that goes beyond traditional response-based testing.
