The issue focused on whether security devices had been modified to protect computer systems from hackers.


But software engineers who worked on Windows machines said Microsoft didn't ask them for detailed instructions about how to avoid malware. They also didn't expect Microsoft to provide complete software updates, which could make their computers less secure.


Hackers have tried to gain access to computers by gaining computer passwords and opening internet browsers that allow users to visit websites they don't control. Windows servers can be infected with malware by allowing Internet Explorer