Opscura
Spanish OT/ICS security vendor that cloaks industrial network traffic at Layer 2 to protect legacy, unpatchable operational technology assets.
Visit Website ↗ + Add to CompareOverview
Opscura is a Spanish operational technology (OT) security vendor, based in San Sebastian, that protects industrial control networks by cloaking Layer 2 traffic rather than relying purely on traditional segmentation or monitoring. The company traces back to Enigmedia, founded in 2011, and rebranded as Opscura after closing a Series A round in 2023, refocusing squarely on industrial cybersecurity.
Opscura’s patented approach obscures OT network traffic at the data-link layer, aiming for zero-impact deployment on legacy industrial protocols (Profinet, GOOSE, BACnet, Modbus) that were never designed with security in mind and are often too fragile to patch or actively scan. Rather than replacing existing OT monitoring tools, Opscura positions itself as a layer that increases visibility, enables segmentation, and reduces the attack surface of legacy assets that plants can’t easily upgrade or take offline.
The company raised .4 million in Series A funding in February 2023 from Anzu Partners, Mundi Ventures, DreamIt Ventures, and Tenable Ventures — notably including a strategic investment from Tenable, a signal of credibility from an established security vendor. Opscura is still small (reported at roughly a dozen employees) and serves customers in renewable energy, transportation, manufacturing, government, and chemical sectors, but named, public customer case studies remain limited at this stage.
Innovation Matrix Assessment
As a recently rebranded, Series A-stage company, Opscura is actively developing its cloaking technology, but public release-cadence data is limited given its small size and recent repositioning.
The zero-impact, no-reconfiguration deployment model at Layer 2 is specifically designed to avoid the downtime and compatibility risk that blocks most OT security projects, which is a real operational advantage if it performs as described.
A .4M Series A closed in February 2023 with participation from Tenable Ventures, Anzu Partners, Mundi Ventures, and DreamIt Ventures is a solid, verifiable funding and validation signal for a company of this size.
Cloaking OT traffic at the data-link layer to protect assets that cannot be patched or taken offline is a materially different technical approach than standard network segmentation or passive OT monitoring, supporting a stronger disruption score.
No independent, third-party test results or named enterprise case studies were found publicly; efficacy claims about zero operational impact and protocol compatibility currently rest on vendor description alone.
Legacy, unpatchable OT assets in critical infrastructure sectors are a well-documented, high-priority attack surface, making Opscura's focus directly relevant to CISOs and OT security leads in energy, manufacturing, and transportation.
Why CISOs Should Care
CISOs and OT security leaders get a way to reduce risk on legacy industrial equipment they cannot patch, segment, or take offline without disrupting production.
What Makes It Different
Opscura's Layer 2 cloaking approach differs from typical OT security vendors that rely on passive monitoring or coarse-grained network segmentation, aiming for protection without touching plant operations.
The Matrix Verdict
57/100 — INCREMENTAL INNOVATOR
A credibly funded, technically differentiated early-stage OT security vendor worth piloting for legacy industrial environments, though efficacy claims still need independent validation given the limited public case-study record.
Editorial Note: Claims vs. Verified Findings
The Series A funding amount and investor list (including Tenable Ventures) are independently corroborated by Businesswire and Help Net Security. Claims of zero-impact deployment and full protocol compatibility are vendor-stated and have not been independently tested or benchmarked in public sources.
Sources
Alternatives to Opscura
Forward
CISO ReviewedBuilds a mathematically accurate 'digital twin' of enterprise networks, letting teams verify network and security changes before they…
Zscaler
A cloud-native security-service-edge pioneer that routes all user traffic through a global proxy cloud instead of backhauling it…
Claroty
Cyber-physical systems protection platform securing industrial, healthcare and enterprise IoT devices for critical infrastructure operators.
Tailscale
A zero-configuration mesh VPN built on WireGuard that applies Google's BeyondCorp zero-trust model to make secure networking accessible…
TXOne Networks Inc.
OT and industrial control system cybersecurity built for zero operational disruption, protecting legacy manufacturing and critical infrastructure devices…
Illumio
A microsegmentation pioneer built on the assumption that breaches are inevitable, focused on containing lateral movement rather than…