1．Install a legal copy of on anti-virus program(杀毒程序)and keep it current through a subscription(订阅)，so that it will recognize the latest“virus definitions(定义)”． 2．Set your computer’s operating system to regularly download(下载)and update those virus definitions． 3．Set Windows to automatically receive and install operating-system“patches(补丁)”that can plug security holes in the software． 4．Set anti-virus software to scan(扫描)all e-mail．Web pages, and instant-messaging traffic for viruses． 5．Use the anti-virus software to scan your hard drive for viruses at least three times a week． 6．Don’t open any attachments(附件)from any e-mail addresses you don’t recognize． 7．If you have high-speed Internet access, install a software firewall on your computer.(A hardware firewall is even better．) 8．Never download anything from a Web site you don’t think is reputable(规范的)． 9．Be ware of e-mail that use Java or Active-X scripts． 10．Clean out any“Cookies”(which track your Web visits)from your browser(浏览器) | 
