Microsoft has improved security gradually over the years through a continuous improvement process and strategic initiatives of it’s executives. Microsoft’s CEO recently discussed security improvements as noted below:
http://www.nytimes.com/2015/11/18/t...d-with-security-flaws-does-an-about-face.html
REDMOND, Wash. — Microsoft was once the epitome of everything wrong with security in technology. Its products were so infested with vulnerabilities that the company’s co-founder, Bill Gates, once ordered all of Microsoft engineers to stop writing new code for a month and focus on fixing the bugs in software they had already built.
But in recent years,
Microsoft has cleaned up its act, even impressing security specialists like Mikko Hypponen, the chief research officer for F-Secure, a Finnish security company, who used to cringe at Microsoft’s practices. “
They’ve changed themselves from worst in class to the best in class,” Mr. Hypponen said. “The change is complete. They started taking security very seriously.”