Learn About Data Diodes
What is a data diode?
A data diode is a class of cybersecurity hardware used to protect industrial control systems and other infrastructure by only allowing the data to flow in one direction. Once reserved for extremely critical applications, like the protection of nuclear power plants, this technology’s cost and complexity have decreased significantly in recent years. Diodes now present a practical choice for industrial and utility cybersecurity.
How do data diodes work?
Data diodes send data in only one direction using a beam of light. All inbound traffic is stopped by the diode because the hardware does not provide light to shine in the reverse. Data diodes provide connectivity to the Industrial Internet of Things and the security of an “air gap.” Operators can transmit equipment status without any possible way for hackers to control industrial equipment, inject ransomware, or use legacy systems as a backdoor to business information systems.
Who uses data diodes?
Data diodes are becoming increasingly rugged and affordable, expanding their uses. They can be used to protect data from sensitive equipment and critical infrastructure control systems. Our current applications of data diode protection include:
Energy and Utilities
Oil and Gas
Waste and Water Treatment
Transportation and Logistics
Learn more about our data diode solutions in different industries
Common Questions About Diodes
What are the benefits of using data diodes?
Today’s internet was designed around two-way communication. This setup inherently introduces cybersecurity vulnerabilities even when a truly one-way function, like equipment monitoring, is desired. Data diodes enable secure access to online monitoring and predictive analytics, allowing:
Decreased Unexpected Downtime
Increased Staff Productivity
Can a data diode be hacked?
Hackers cannot penetrate a data diode remotely. Data diodes are designed to be highly secure by using physics (light) instead of software to provide protection. They are also typically built with multiple layers of security, including encryption and access control mechanisms.
What are the limitations of using a data diode?
Since data diodes only allow data to flow in one direction, applications are limited to unidirectional use cases like cross-domain data transfers, equipment monitoring, and data exfiltration. If your use case requires remote access or control of assets, a bidirectional data flow may be better suited for you.
Fend’s Data Diodes
Fend makes robust, affordable data diodes to protect industry, utilities, critical infrastructure, and our modern way of life. Browse our data diode products and contact us with any questions!