Today, Microsoft is "sunsetting" Windows Vista. That means it will no longer be supported with security updates from Microsoft. So if you find yourself with a machine running Windows Vista, you should look at upgradating to a newer version of Windows in order to stay secure. Windows 2000, Windows Me, Windows XP, Windows Vista In the early 2000s, Windows pumped three major consumer operating systems: In early 2000 came Windows 2000, later that year, Windows released a Windows Millenium update which was filled with glitches and bugs, including a way to bypass the password screen...
Source: http://www.gsmarena.com/microsoft_has_laid_windows_vista_to_rest-news-24484.php
