Most companies you know... For IT systems it is quite easy if you have money required. For OT-operational technology, I just got to know they keep infected mach

Most companies you know... For IT systems it is quite easy if you have money required. For OT-operational technology, I just got to know they keep infected machines running, they wall those off. Because you cannot just replace physical machine that is running some complicated chemical process just like that. Some factories also do not have money to replace some Win XP or they cannot replace Win XP because all the drivers for specific hardware are not working on new stuff. Life time of systems in OT is 20 years not like IT 5 years.