A cursory search ( https://www.google.co.uk/search?q=%22patched+zero-day%22 https://www.google.co.uk/search?q=%22patched+zero-day%22 ) reveals many industry sou

A cursory search ( https://www.google.co.uk/search?q=%22patched+zero-day%22 https://www.google.co.uk/search?q=%22patched+zero-day%22 ) reveals many industry sources misusing it following that definition. How can a 0day ever possibly be considered "patched" if the vendor had no knowledge of what the patch is for? etc.