Lighter | Smarter | Faster Quick Heal AntiVirus Pro protects your laptops and desktops and provides protection against malicious threats that can sneak into your system when you are browsing the Internet, checking mails, chatting, etc. Upon installation, it acts as a shield against viruses, worms, trojans, spywares and other malicious threats. It also provides security against new and unknown threats with Quick Heal's renowned DNAScan® Technology. It utilizes minimum system resources, thereby giving complete protection to your system without slowing it down.