Virus scanning is the process of checking files to see if they contain known viruses. Virus cleaning is the process of removing the detected virus from the file so that the file can be used safely.
Using Norton AntiVirus, Yahoo!7 Mail scans and cleans all your attachments for free. However, this only protects you from viruses sent to your Yahoo!7 Mail account. For protection from other types of viruses, such as those you may inadvertently download when visiting non-Yahoo! web sites, we recommend installing anti-virus software on every computer you use.