European Distribution Partners
4Secure are proud to have been Owl Cyber Defense’s UK and European exclusive distribution partner for over 15 years.
Our patnership ensures that the strongest cybersecurity solutions for data transfer are built on expertise, innovation, and collaboration.
For over 25 years, Owl Cyber Defense has been at the forefront of data diode technology, securing some of the world’s most sensitive networks across defence, intelligence, government, and critical national infrastructure. Their technology is trusted by government departments and enterprises worldwide, ensuring unidirectional data transfer that guarantees absolute network segmentation and protection.
What Sets Owl Cyber Defense Apart?
Market Leading Data Diodes
Designed for the highest levels of security, Owl’s hardware-enforced, one-way data transfer technology eliminates cyber threats by physically preventing bidirectional communication.
Proven in Mission-Critical Environments
Owl’s technology is deployed in defence, energy, financial, and industrial control systems where security is non-negotiable.
Rigorous Certification
Owl data diodes meet the strictest regulatory and security requirements, ensuring compliance with US, UK, and other global standards, including those set by the UK National Cyber Security Centre (NCSC) and the US National Security Agency (NSA)
Seamless Integration
4Secure’s technical expertise ensures smooth deployment and ongoing support for organisations requiring absolute network security.


Secure Data Transfer for High-Assurance Environments
4Secure and Owl work in partnership with clients to provide tailored Cross Domain Solutions that maintain the highest levels of security and empower operational efficiency. Whether securing defence networks, critical infrastructure, or government systems, our combined expertise delivers scalable and future-proofed cybersecurity solutions.

Command and Control

Secure File Import

Secure Browse Down

Secure Video Transfer

TCP Data Transfer

OPC Data Transfer

Splunk Data Transfer

Logrhythm Data Transfer

TAK Data Transfer
Contact us today to discuss your secure data transfer requirements
Discover how 4Secure and Owl Cyber Defense can enhance your cybersecurity strategy.
