Let's protect the data diode one-way communication restriction device "OWCD"!

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One-way communication data diode OWCD

last updated：Nov 20, 2025

Official site

Are you able to implement multi-layered defense? Can you fully protect critical infrastructure and production facilities? The only option to physically "cut off" communication in one direction is "OWCD."

Cyber attacks are now targeting "management and operational shutdown" rather than just "information leakage." As automated malware generation and high-precision phishing techniques advance, attacks unfold at a speed that surpasses human thought. How far can firewalls, VPNs, gateways, virus checks, and access authentication software keep up? Maintenance is challenging, and the reality is... According to a survey, it takes an average of 349 days to realize a ransomware intrusion has occurred; in fact, systems are already compromised. Whether actual damage occurs depends on the intruder. While humans are still processing a response... A reliable mechanism to stop communications coming from outside is essential for critical infrastructure, production facilities, IoT data collection, and SYS-LOG checks. It is also important to have a system that blocks the "outlet" for malware to communicate with the outside from within the information assets that need protection. OWCD physically disconnects one-way data communication to eliminate external intrusions or data exfiltration. It achieves a "zero trust" barrier that cannot be fully prevented by firewalls or software controls, using hardware instead. The number of cases utilizing multi-layered defense is rapidly increasing! There is an explanatory video at the related link below! This technology is patented by Mitsubishi Heavy Industries, Ltd.

Related Link - https://power.mhi.com/jp/group/eng/business/produc…

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basic information

The Data Diode is fundamentally based on the principle of connecting a cable in one direction (unidirectional) from a circuit that is essentially disconnected (with no physical cable). There are no settings for unidirectional communication; it is simply not possible to enter from this point. For more details, please watch the video explanation on our company’s website via the link below. Using unnecessary external intrusion routes or routes that cannot exit even if they were to be compromised offers a completely different level of safety and security. Gateways and firewalls need to have settings that ensure they effectively block access, and maintenance for updates must be carried out promptly as needed. With a data diode, since no data, commands, protocols, or packets are allowed to flow, external attacks are physically impossible. Attacks exploiting system vulnerabilities or remote access accounts cannot occur, significantly reducing risks to a level comparable to systems that are isolated from the network. Additionally, there is no need for maintenance personnel, which reduces operational burden and costs. There is an increasing number of cases in critical infrastructure, factories, research institutions, and medical facilities where information is provided and utilized across boundaries without concerns about data leakage. Please contact us via the related link above.

Price information

Expansion of lineup from 100Mbps to 10Gbps models centered around the 1Gbps model Secure communication for government agencies, file transfer Delivery of operational information from OT systems to IT systems Updating customer-provided (display) information from databases to web servers Delivery of medical database information to insurance claim receipt systems Information dissemination via email (including predictive and preventive information) Please consult us regarding overseas exports. We will provide guidance on safety standards for the destination country and handling of strategic materials. Please contact us through the related links above.

Price range

Delivery Time

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※This is a made-to-order product. Please contact us via the related link above.

Applications/Examples of results

Each device can be used anywhere if communication is allowed to be regulated in one direction, such as between OT and IT, or IT and the Internet. If you aim for zero trust, you should design to segment the network. It will be installed at the point where data is sent out from the most critical segment. When publicly disclosing information on the web, simply placing a data diode between the web server and the database in the information transmission circuit can prevent intrusions into the database. When sending data from production equipment to the production management system, it is sufficient to insert it between the PLC and the database. We have numerous achievements in remote monitoring of thermal power plants (including overseas: in South Korea, Southeast Asia, and Europe). While I can't discuss specifics, we are also utilizing this for the defense of critical infrastructure important to everyone, including government agencies and public institutions. It can be easily used in offices that handle a lot of personal information, design offices and engineering firms that deal with intellectual property, and departments like factories and construction companies that are concerned about security. We also accept various inquiries regarding system construction support and shape modifications for product integration. Please contact us through the related links above.

Detailed information

This is the OWCD G. It is a flagship product of OWCD that supports a communication bandwidth of 1 Gbps. It can be utilized for various needs that require a data diode. It is ideal for applications built by system integrators. Customized models are also available. Please feel free to consult with us.
This is the first product of the data diode "OWCD," the [OWCD2]. It is a general-purpose model with a communication bandwidth of 100 Mbps. Recently, the communication volume used by everyone has increased, leading to capacity shortages, but it is still very much in use for intrusion countermeasures from Syslog collection routes, among other things.
We have started supporting OPC-UA! In industrial networks, - Diversification and high functionality across production systems - Enhancement of communication security The increasingly utilized OPC-UA for these advancements is now docked with the easy and convenient boundary control provided by the physical one-way communication-limiting data diode OWCD. We provide measures to protect you!
Data moving between different secure zones that users are aware of primarily consists of files, surprisingly. It is the best-selling item. We focused on this and added a function to collect and deliver files to OWCD. We also perform regular collection and delivery. Please consult us regarding applicable models.
We offer products that not only transmit data using different communication protocols, but also have the capability to convert to the most suitable communication protocol for both collection and transmission, as well as features for data visualization, such as data collection and display analysis. Please consult us regarding applicable models.