For years MAC claimed that it is impossible to be attacked by any Virus, it could pass one on to Non MAC Computers via attachments or email. How has this changed, because I still see MAC Users making the same claim and trying to make MS users look like idiots. In most cases when I need any Adobe Updates I go to Adobe website and download from there, because often if you have any program on your computer that may be using adobe those links from adobe popups won't let you install even if the program is closed. If you are not sure if it is a legitimate update go to the publishers website.
You can trust MS windows updates from the Control Center.