No, although Firefox is more resistant to viruses than IE, it cannot completely prevent viruses from invading. I suggest that when you use Firefox, you'd better install McAfee SiteAdvisor, which can remind you of malicious websites, such as dividends (malicious), yellow (dangerous) and green (environmentally friendly and nontoxic). You can refuse to visit some poisonous websites according to the color and keep your system clean. The specific usage can be studied slowly, and it is best to download the complete cracked version of Chinese. Very easy to use!