It's not a matter of IT systems but a matter of CURRENT IT systems, who happen to be connected on public network even when there are not much reasons to do so,

It's not a matter of IT systems but a matter of CURRENT IT systems, who happen to be connected on public network even when there are not much reasons to do so, who happen to be full of proprietary crapware developed in awful ways nobody knows really how anything works etc. Let's play a game: how many time we will need to see ALL cars of a certain brand bricked by a bad OTA upgrade or a deliberate attack? It's a matter of IT/cracking OR a matter of current commercial-drive bad IT evolution? Try to read a bit about recent famous aqueduct sabotages like https://www.bleepingcomputer.com/news/security/us-government-discloses-more-ransomware-attacks-on-water-plants/ https://www.bleepingcomputer.com/news/security/us-government... https://www.bleepingcomputer.com/news/security/hackers-undetected-on-queensland-water-supplier-server-for-9-months/ https://www.bleepingcomputer.com/news/security/hackers-undet... https://arstechnica.com/?p=1765767 https://arstechnica.com/?p=1765767 and so on. It's really a matter of hacking and cracking? Honestly my own personal answer is no. It's a matter of widespread ignorance and business practice.