Concrete examples of how hardware-enforced one-way communication protects critical networks against cyber attacks, ransomware, and data exfiltration.
IP cameras are vulnerable IoT devices that use bidirectional communication by default. An attacker who compromises a single camera can pivot through the camera network into the entire building or security system. A data diode makes this physically impossible.
A compromised camera cannot reach the secured network. No command channel back.
Video data flows uninterrupted via RTSP/UDP. No latency, no quality loss.
The recording server is physically unreachable from the camera network. Evidence remains intact.
Ransomware increasingly targets backup systems. If the primary backup network is compromised, attackers can encrypt the backups too. A data diode in front of the offsite vault makes backups permanently unreachable for attackers — while replication continues uninterrupted.
Attackers cannot reach the vault — no write access, no commands, no encryption possible.
Restore points are stored immutably. Even a compromised Veeam server cannot modify the vault.
Veeam copy jobs continue running normally. No manual tapes or disk transfers required.
OT environments collect process data continuously — from robots, PLCs, SCADA systems and historians. That data is valuable for analytics, reporting and AI models on the IT side. But allowing a direct database connection between OT and IT creates a two-way channel that attackers can exploit. A data diode enforces one-way replication at the hardware level: data flows out, attacks cannot flow in.
No IT system can reach back into the OT network. A compromised cloud instance or analytics server cannot affect production.
Process data, historian values and sensor readings flow continuously to Azure, AWS or on-premise analytics platforms without interruption.
Hardware-enforced OT/IT separation satisfies Article 21 of NIS2 and the network segmentation requirements of IEC 62443.
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