As technology gets improved and more privacy options and security technologies get installed in the latest web browsers and computer systems , more and better viruses ,PUPs(potentially unwanted programs) and malware(malicious softwares) also find their way into existence.
In today's world where an internet connection is available in every house and millions of people download software into their systems , a strong and bulky anti-virus program is also needed for prevention of infection of viruses on computer systems.
The most common source for viruses is the internet , then there are usb flash drives and other external storage devices.
So, to prevent viruses to accumulate on your system , you will need an antivirus program.If you don't install an anti-virus program , your computer will be infected easily and the virus will slow down your pc and make it look like its a hundred years old!
If you are looking for a free or a paid antivirus program I prefer avast! because of its features and its real-time shields.
You see its necessary for anti-virus programs to have real-time shields so that they can warn you of viruses before the viruses get into your pc.Although there are many other anti-virus programs that have real-time shields , avast has the most number of shields.The shields avast has, protect you from viruses in attachments in emails , viruses on websites , viruses in downloads , viruses that can get into your pc from your network etc.
These are only some of the shields avast has to protect you.
Avast also has a web plug-in for common web browsers such as google chrome and internet explorer.
The plug-in shows the rating of websites you visit , you can also rate a website if you like.
You can also block websites and urls if you don't want to visit them or if you think they are malicious.
Another feature that avast has and that other programs don't have is the boot time scan which scans your drives before windows boots up so that the viruses(if any) can get removed before they are activated.
You can configure avast to scan usb flash drives the moment they are plugged in to your system.
Custom scans can also be performed if you wish to scan specific files or folders.
The virus definitions are updated automatically , so you don't have to worry about that.
If you want better protection from avast you can buy avast internet security with which no normal virus can get into your pc via the internet or any other way.
If you want an anti-virus program download avast because it is the best one you will find!