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Currently, the number of sensors and devices being connected to an organization’s IIoT is gaining ground, and, sadly, that shift contains in itself a huge potential for attackers.
Simply put: OT equipment and control systems are way outdated. Moreover, they have never been designed for exposure to the Internet and, therefore, they’re dangerously vulnerable in terms of cybersecurity.
Quite often a Frankenstein-esque mixture of OT and control systems made by multiple vendors isn’t updatable. These systems include human-machine-interface (HMI) computers with access to remote terminal units (RTUs), SCADA master (supervisory control computers), and programmable logic controllers (PLCs).
Poor (or even lack) of cybersecurity practices and technology or the lack of budgets to do so.
And - obviously - an escalating number of attacks, variable in their tactics and techniques. The list of cybercriminals now includes sophisticated nation-states, cybercriminals with ransomware for shutting down a plant, and hacktivists.