Antivirus Engine
Is used for Real Time malware protection of files and is the main component used to scan data on your PC in order to detect and remove any malware from your hard disk, memory, network drives, boot sectors, removable disks, or from external network traffic (the internet).
Scanning for Viruses
Most antivirus software includes the following basic scan types:
• On-demand scan/manual scan – Activated by the user by right-clicking or from opening up the software.
• On-access scan – Runs in the background for the entire time that the system is powered on (unless paused by the user). This scan monitors all system activity and automatically scans files which have been downloaded from the internet or through emails.
• Scheduled scan – The user sets up a time and frequency for a scan to periodically ensure that the system is free from malware.
• Startup scan/quick scan – Just checks the most important locations such as the running processes, startup items, system memory, boot sectors and so on.
Below you can find five highly recommended free antivirus software programs:
1. Qihoo 360 Total Security
2. Avast Free Antivirus
3. Comodo Internet Security Premium
Source
Pros:
Cons:
• Isn’t very beginner friendly.This antivirus software is also compatible with Windows XP-10, Linux and Mac OSX and can be downloaded here. This software will take up 208 MB of your memory.
Source
Pros:
Cons:
• Zero-day protection is very weak.
• Very ineffective Browser launcher which takes up a lot of memory.
• Painful removal for detected malicious files.
• No firewall/sandboxing/ web shield technologies.
This antivirus software is compatible with Windows XP-10, and Mac OSX. This software will take up 200 MB of your memory. It can be downloaded from here.
Source
Pros:
• Low memory and CPU usage thanks to its cloud protection.
• Tiled customizable UI (User Interface) and nicely rendered Settings interface.
• Good detection rates and behavioral analysis program.
• Decent web protection and hardware resource handling.
Cons:
• Requires an internet connection which leads to weaker offline protection.
• Slow scanning speeds and occasionally has issues with virus removal.
• Watch out for the Panda toolbar during installation.
• Sometimes gives false positives.
This antivirus software is only compatible with Windows XP-10. It can be downloaded here. This software will take up just 61.4 MB of your memory.
Source: techsupportalert