Ewigbyte collaborates with Capsyra

Storing data in glass, permanently and without energy consumption: That's what they're working on. Eternalbyte, Deeptech startup from the Munich startup scene, will in future partner with the Belgian company Capsyra together. The companies presented their cooperation at CyberSec Europe 2026 in Brussels. The goal is an infrastructure for long-term data storage that is protected against manipulation and cyberattacks.

Ewigbyte is developing a storage technology that uses ultrashort pulse lasers to permanently write data into glass. According to the company, the storage media require no further energy after the writing process and are designed to remain physically disconnected from the network. Capsyra complements the technology with encrypted archiving and auditing mechanisms.

At the trade fair, Ewigbyte showcased glass samples containing stored data, which, according to the company, can be read using a microscope and standard QR code readers. Capsyra achieved third place in the "Best Cybersecurity Innovation Europe Award 2026" competition.

Storage for long-term archives

The Belgian startup Capsyra was founded in 2025 and develops systems for long-term data archiving. The stored data should be auditable independently of individual platforms or cloud providers.

Ewigbyte positions its technology as an alternative to traditional tape storage for long-term archives. The company describes its glass storage media as physically isolated from the network. This is intended to prevent data from being remotely deleted or encrypted by ransomware.

Starting in early 2027, the companies plan to connect their first customers to the shared infrastructure via the Capsyra platform. The initial target group will be organizations with long-term archiving and documentation requirements, including research institutions, cultural institutions, and operators of critical infrastructure.

Focus on European infrastructure

Both companies see their technology as a European alternative to large cloud providers. This is due, among other things, to stricter regulatory requirements within the European Union, such as the NIS2 Directive and the Cyber Resilience Act.

Ina von Haeften, co-founder and Head of Operations of Ewigbyte, says:

"We are building the missing durability layer for Europe's data infrastructure."

Ruben Tacq, CEO and CTO of Capsyra, adds:

"Data should be protected with the same seriousness as irreplaceable physical assets."

Ewigbyte is one of several deep tech startups from the Munich area working on infrastructure technologies for data storage and cybersecurity. According to the company, it is currently building a network of technology and infrastructure partners in Europe and the USA.