The security and operation of cyber-physical systems depend on a strong foundation of network segmentation. In mission-critical environments, you must continuously verify - 24/7 - that your segmentation is in place and stays effective. This is what SensorFu Beacon delivers. Let’s get back to basics!
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Network isolation and segmentation are fundamental to protecting critical operations, particularly where IT networks intersect with high-value OT environments. Organisations invest heavily in firewalls, VLANs, access controls and air-gapped architectures to create strong, trusted boundaries.
Many industrial systems used today were built decades ago to run non-stop for years. In these environments, keeping systems up and running safely is the top requirement. Because of this, companies often prefer to live with older, known risks rather than try new security tools that might cause problems. Many older networks have unrecorded firewall rules, aging equipment, unsegmented networks, and unknown dependencies. These risks are often accepted simply because they have existed for years without causing a breakdown. Cybersecurity teams know they need to fix these issues, but it is hard to know where to start. Many security tools claim to be “passive” or “non-invasive”, meaning they won’t disturb the network, but OT teams need real proof before they can trust those claims.
In cybersecurity everything is possible and nothing is unexpected. That is what we have seen over the years at SensorFu. But when we heard that SensorFu Beacon called home from some place where it wasn’t deployed, even that surprised us. For a minute.
