Who makes Yahoo Antivirus?

Also, who makes the other parts of Yahoo security?

Who makes Yahoo Antivirus?symantic

the answer is in your question, yahoo does.

Who makes Yahoo Antivirus?viruses

To my knowledge Yahoo! uses Norton Antivirus to scan the attachments that comes with the mail. You can see the logo of Norton Antivirus and a message when you upload/download attachments. For the rest of the security I dont know. But I have seen the content is being switched to akamai.net - not sure for what process it does that?!?!?!
most virus are spread through IE. IE is not a safe browser. you should use a more secure browser to protect your PC from virus.

i recommand you to use firefox with Google toolbar. firefox can block any any popup and disable any virus and adware, spyware on webpage, so, firefox is much safer than IE browser. as you know, most of virus spread throught internet and webpage.

besides, firefox is much smaller than IE, so it run faster than IE.

download firefox for free, Just have a try:

http://www.toolforus.com/firefox/

Good Luck !!!
well Symantec is one partner of yahoo, yeah symantec makes antivirus for yahoo
http://shop.ca.com/

computer associates, good stuff, works great

image (proof):

http://img125.imagevenue.com/img.php?ima...

(not installed at work, since they have McAfee running, but i use it at home)

as for the other stuff, the anti-spy just says Yahoo! Anti-Spy, so I dunno

EDIT:

norton anti-virus is used for email only