Tofino Security report shows that well-secured computer systems would still get infected with Stuxnet. Even systems secured according to best practices set by Siemens are vulnerable to attack, report says. Report: Companies need to create a security architecture that can respond to the full lifecycle of a breach. Report also says companies will invariably be infected with increasingly sophisticated threats, making the detection and minimization of the damage from such an infection paramount. The report: “The industry needs to accept that the complete prevention of control system infection is probably impossible””]
Source: https://www.csoonline.com/article/2127265/secure-best-practices-no-proof-against-stuxnet.html