Zero Trust is not a philosophy of "discarding boundaries." What is the "final boundary" required in all networks?
Current cyber attacks are targeting "operational shutdown" rather than "data leakage."
OWCD physically disconnects communication in one direction, fundamentally cutting off either the entry or exit. It builds a "zero trust wall" in hardware that cannot be breached by software, eliminating opportunities for attackers. It is perfectly compatible with zero trust and is chosen as the "last bastion" of multi-layered defense.
Infostealer malware can send information collected from the victim's computer to the attacker's computer in about a minute. Moreover, it cleverly bypasses communication monitoring. By the time you realize it, the attacker has already penetrated deep into the internal systems, allowing them to cause real damage at any time they choose. While humans are still making judgments, the attack quietly progresses, and the damage expands. If you allow reconnaissance activities by viruses, the next risk will be an immediate shutdown. Therefore, communication lines can be cut off.
Critical infrastructure, production facilities, IoT, SYS-LOG lines—once breached, these areas jeopardize business continuity. It is also essential to have a mechanism to seal off the "exit" to the outside where information-stealing malware can send out extracted information. That’s OWCD.
There is an explanatory video at the related link below! This technology is patented by Mitsubishi Heavy Industries, Ltd.