Bill Gates security memo on January 2002: Electricity, water, and telephony are (wrongly) considered “secure” Is there any other system in the world that could be accessed by any threat, at any time? What sorts of man-made systems are relentlessly under attack by intelligent adversaries? I’m adding intelligence here to remove comparisons to diseases, weather, earthquakes, and so on. The first system that came to mind was the modern casino. People are always trying to cheat, so the threat level is high. Physical security probably has a few useful lessons.”]
Source: https://taosecurity.blogspot.com/2006/10/thoughts-on-gates-security-memo.html