Every time I check my news feed, I see notifications about new advisories that affect OT network managers. Cybersecurity and Infrastructure Security Agency (CISA) is actively releasing Industrial Control Systems (ICS) advisories, with four released on June 10, 2025, and twenty-two released on May 15, 2025. Those are just the ones we know about. We know that there are more that haven’t been reported, and many more than haven’t been found…yet.
Recent CISA/ICS Advisories (June 2025)
It is well known that a significant challenge in OT environments is the prevalence of legacy technology. Many industrial systems run on outdated or unsupported platforms that were never designed with cybersecurity in mind, making them difficult to patch or secure. In 2024, 65% of OT environments had insecure remote access conditions, with 45% using SSH to communicate with publicly routable addresses1. This widespread insecure remote access creates a critical entry point for attackers. In many cases, even if a patch exists, the OT security administrator (who is often part-time) hasn't patched the devices because it would require downtime, which is undesirable.
The "patching paradox" in OT illustrates a fundamental tension between operational uptime and security. Legacy OT systems were designed for reliability and longevity, rather than frequent security updates, making patching a complex and often disruptive process. This is not an environment where a “Patch Tuesday” would be accepted. The low appetite for downtime among manufacturers means they are frequently hesitant to pause production for system changes or upgrades, leaving known vulnerabilities unaddressed. This necessitates a shift from traditional IT-centric patch management to a more nuanced OT approach. For systems that cannot be updated, compensating controls such as network segmentation, identity-based access controls, and network cloaking become paramount.
This is where BlastWave can help your OT network. We can cloak your OT devices so that any vulnerabilities can’t be seen or discovered by hackers. We can ensure that passwordless MFA is used to access your network with Zero Trust, thereby removing the threat posed by stolen credentials. We can also segment your network so that even if an employee turns malicious, their scope of access is minimized.
#MakeHackingHopeless
Try out BlastWave today at https://www.blastwave.com/schedule-a-demo
Experience the simplicity of BlastShield to secure your OT network and legacy infrastructure.
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