Norton Antivirus is a powerful software which acts as a shield for your device against the virus, worms, malware, and other harmful threats. It is developed with as per the latest technology with fast scanning ability. Moreover, this antivirus blocks the browser exploits and protects against the infected or malicious website which stays prone to threats. So it is advised to opt for Norton free download from official website. You can try the subscription for the period of minimum 30 days.