I remember the first time I encountered a Windows machine you had to log in to to use (1996). At my first job, I had write access to all the system directories

I remember the first time I encountered a Windows machine you had to log in to to use (1996). At my first job, I had write access to all the system directories on the corporate VAX machine. I could have easily taken down a major corporation through a careless mistake (but fortunately, never did).