HyperBunker

HyperBunker builds a hardware-based, air-gapped data vault that uses one-way data diode technology to keep a copy of an organization’s critical data physically isolated from any network connection, credentials, or software dependency. The pitch is straightforward: conventional backup systems, even immutable cloud backups, are still reachable over a network and therefore still theoretically exposed to a sufficiently capable ransomware actor or insider; a device that is genuinely offline and software-free cannot be remotely encrypted, deleted, or tampered with because there is no network path or authentication surface to attack.

Spun out of Zagreb, Croatia-based data recovery business InfoLAB by CEO Bostjan Kirm and CTO Imran Nino Eskić, HyperBunker targets critical-infrastructure sectors — energy, finance, manufacturing, and healthcare — where extended downtime or unrecoverable data loss carries outsized consequences. The company raised approximately €800,000 (about $925,000) in seed funding in 2025 from Fil Rouge Capital and Sunfish Venture Capital to scale production of its physical vault devices.

As a very early-stage hardware company, HyperBunker has not yet published independent, named enterprise case studies or third-party validation of its recovery claims, and hardware-based air-gapped backup is inherently a slower, more operationally involved approach than software-defined immutable backup alternatives already offered by established data protection vendors. The core physical-isolation concept is sound and addresses a real gap in ransomware resilience, but the company’s evidence base is currently limited to its own product claims and early investor backing rather than demonstrated field results at scale.