Does Yahoo check for viruses automaticly?

Are you referring to Yahoo mail?

No, it doesn't.

It doesn't stop spam very well either.

Does Yahoo check for viruses automaticly?trojan

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Does Yahoo check for viruses automaticly?abtuvurys 2005

if u have the toolbar
Yahoo checks for viruses in the Yahoo mail, because it actually resides on their servers where they can check it. They have no way of checking other e-mail systems or web sites and downloads for viruses. Unlike some of the paid services (AOL, etc), Yahoo does not provide a local virus program for your computer. You have to install your own.

If you do not have one, go to http://download.com and look for ''AVG Free'' (there is both a free and a paid version of the program - go with the free one). Have used it for years on multiple computers without a problem.
If you are Mentioning about Yahoo Mail then YES

It checks for Viruses using Norton when Downloading Attachments...

Hope you are satisfied with the Answer
Yahoo only checks for viruses in your Yahoo web-mail e-mail inbox.

You still need an anti virus program installed on your computer.

This is an excellent free one:

Active Virus Shield:

http://www.activevirusshield.com/antivir...