Each day the Web produces lots of new malware that can infect the machine, erase or steal the valuable info. Antivirus is a software that defends the device, notebook, or netbook against such risks by detecting and deleting viruses or other malware.

Companies innovating in Antivirus Software Market are Avira, Qihoo 360, Kaspersky, Panda Security, Quick Heal, Symantec, McAfee, Trend Micro, AVG, Avast Software, ESET, Bitdefender, Fortinet, F-Secure, G DATA Software, Comodo, Microsoft, Rising, Cheetah Mobile, AhnLab

Antivirus Software Market Restraining Factors: Availability of alternatives, High cost of updations

However, this does not mean all free antivirus applications can be ignored out of hand – several are indeed really effective and might well be enough for certain users. Implementing any antivirus software is better than not getting any, but users ought to be on the alert for free but bogus antivirus applications that are no safer than the viruses we're trying to stop.

Antivirus is a must for every operating program because it defends all machines from external attacks. A successful antivirus detects and removes all viruses, spyware, trojans, rootkits, ransomware, phishing assaults and spam attacks that may damage the device.