Great one from bLaugh:

Says Apple:

"As you might imagine, we are upset at Windows for not being more hardy against such viruses, and even more upset with ourselves for not catching it," the company stated.

Says Microsoft:

"We encourage all third party vendors to follow best practices and help protect their users regardless of platform through careful scanning of the software they ship, so that they do not expose their customers to unnecessary risk from malicious software," the company said.