CNET staff not advertisers, partners or business interests determine how we review products and services. If you buy through our links, we may earn a commission. Antivirus software runs virus scans for known viruses and malware, watches for shady websites, offers ransomware protection and monitors unexpected behavior that may be a sign of new viruses and malware. You want antivirus software that can successfully identify these unknown online threats without flagging too many false...
