We are delighted to confirm that 4Secure is now part of the Elvirian group! Elvirian is a European cybersecurity group delivering specialised IT and OT security solutions that protect critical infrastructure, networks, and industrial systems. Elvirian helps organisations secure data in motion and at rest across mission-critical environments.
What does this mean for existing customers and partners?
On the whole, business as usual! 4Secure continues as a UK sovereign business with all development and support remaining in the UK. Our existing management team and brand stay in place, with everything that made 4Secure a European leader in Cross Domain continuing as before.
All existing and future Cross Domain deployments for all clients are unimpacted.
Our customers and partners will now have direct access to leading cybersecurity technologies from across Europe, more to follow.
If you have any questions, please speak to your 4Secure main point of contact.
We look forward to continuing the success of 4Secure and would like to conclude by saying a huge thank you to all of our customers & partners that have joined us on the journey so far.
Here’s to the future!
Jon Barlow, 4Secure CEO
Official press release
A specialist in sovereign Cross Domain Solutions strengthens Elvirian’s capabilities within mission-critical cybersecurity.
Stockholm, 10 August 2026
Elvirian welcomes 4Secure into Elvirian, further strengthening its portfolio of mission-critical cybersecurity solutions.
4Secure design and deliver sovereign, vendor-agnostic Cross Domain Solutions (CDS) that enable controlled, secure data transfer between networks and systems with differing security requirements Trusted by defence, government, and critical infrastructure organisations, 4Secure empowers customers to securely exchange information and data without compromising operational security.
With 4Secure, Elvirian strengthens its capabilities within secure data transfer, trusted information exchange, and high-assurance network protection. The addition expands Elvirian’s offering for organisations operating where security, resilience, and operational continuity are non-negotiable.
4Secure will continue operating under its existing brand, with its current management team remaining in place.
Parsa Lalehzar, Director, Elvirian:
“4Secure is an outstanding addition to Elvirian. Their expertise in Cross Domain Solutions addresses one of the most demanding challenges in cybersecurity: enabling secure information exchange across environments with different security classifications. It is a capability that is increasingly critical for defence, government, and operators of critical infrastructure. Beyond their technical capabilities, we have been equally impressed by the people behind 4Secure. We see a strong cultural fit and look forward to building on their success together.”
Jon Barlow, CEO, 4Secure:
“Joining Elvirian marks an exciting new chapter for 4Secure. We’ve built our reputation on delivering trusted, cybersecurity solutions to some of the UK’s most demanding organisations and becoming part of Elvirian gives us the opportunity to accelerate that journey. Together, we can combine complementary technologies, expand internationally, and continue investing in innovation, while remaining committed to the customers, people and values that have made 4Secure successful.”
About Elvirian
Elvirian delivers specialised IT and OT security solutions that protect critical infrastructure, networks, and industrial systems. Elvirian helps organisations secure data in motion and at rest across mission-critical environments.
About 4Secure
4Secure is a UK-based cybersecurity company specialising in sovereign Cross Domain Solutions. Their technologies enable secure, policy-enforced information exchange between networks and systems with differing security requirements; supporting defence, government, and critical infrastructure organisations with high-assurance cybersecurity solutions.
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