Ransomware and malware infiltrating production systems, leading to total factory shutdowns.

Security vulnerabilities created by traditional remote access methods like port forwarding that invite external attacks.

Inability to track which remote user changed what parameters on which machine.

A virus starting in the office network (IT) spreading to machinery due to ill-defined boundaries with the factory network (OT).

Industrial devices being detectable on the internet by IP scanners, making them prime targets.

Systems protected only by simple passwords being easy prey for hackers due to a lack of audit controls.