>"cyber-attacks and security vulnerabilities in Microsoft products and services that could reduce revenue or lead to liability" should be at the top of the list

>"cyber-attacks and security vulnerabilities in Microsoft products and services that could reduce revenue or lead to liability" should be at the top of the list. Could you point out any program or OS that could guarantee neither of these? Based on what I have seen all major OSes and programs have these issue regardless of whether it is closed source or open source. Besides how do expect them to quantify such unforeseeable events on their accounting statements?