An aerial view of the US Cyber Command joint operations center on the NSA campus. The NSA and CISA last week issued a joint alert warning that operational technologies and industrial control systems must have reduced internet exposure. Photo credit: Brendan Smialowski / AFP via Getty Images.

Security professionals responsible for protecting critical infrastructure strive to isolate and segregate their most mission-critical systems, but there are still too many operational technology (OT) assets that are accessible to attackers over the internet, according to a new government alert.

When searchable and accessible via the internet, OT systems – just like conventional IT systems – can potentially be scanned and identified using search tools like Shodan, and ultimately exploited by cybercriminals.

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