Google released Android 4.4 KitKat Thursday, but how soon users will get the OS will depend on their wireless carrier or the device manufacturer. The update problem has existed with Android since the beginning and most experts agree it presents the biggest security risk to users. The FBI and Department of Homeland Security cited SMS Trojans, rootkits and fake Google Play domains as the top security threats to out-of-date Android devices. Android has become the leading mobile OS because Google made it easy for carriers and manufacturers to use it.”]
Source: https://www.csoonline.com/article/2134132/kitkat-is-out–but-a-lot-of-android-users-won-t-get-it.html