One of the basic needs of any computer system is to protect it from viruses and malware. Hackers are always seeking new opportunities to get access to your data and information. However, not every intrusion into your system is dangerous, but the vulnerability of your operating system can attract dangerous cyber attacks and viruses in the future.

The internet has its advantages and disadvantages. The internet enables us to access every content with a single click, and we can connect with anyone in this world via the internet. But it also brings a lot of dangers like viruses, spyware, and malware. To protect yourself from such dangers, having efficient antivirus software in your system has become a necessity. The antivirus software automatically detects and blocks any threat that tries to access your system. The antivirus software provides protections like Antivirus, Rootkit Protection, Bot Protection, Worm Protection, Trojan horses, Spywares, and Messaging Protection. But downloading heavy antivirus software can affect your system’s performance.

In this article, we will mention some best antivirus software to protect your system from online threats without affecting the speed of your system. These rankings are based on our internal reviews:

Avast Free Antivirus

Avast is a cloud-light and an award-winning free virus protection software. The software is packed with the “threat-detection network,” “home network security” and “machine learning virus protection.” 

It scans the security and performance issues and guides you on how to fix it quickly. It automatically sends suspicious files for inspection and treats it if it’s a threat. Its “Wi-Fi inspector” feature automatically detects any vulnerability in your Wi-Fi and any piggybacking activity on your network. Its latest version has an intuitive interface with advanced application protection, and it can run multiple security products in parallel. It protects you from dangerous ransomware and its latest “Do Not Disturb Mode” blocks pop-ups while playing games. They have recently introduced “Behavior Shield” features which makes sure your apps do not catch any malware, and it monitors any sudden change in behavior of your apps. It finds any loopholes that can allow malware to enter into your system like unsafe settings, add-ons, and out-of-date software.

Norton Antivirus

Norton Antivirus offers a variety of protection plans as per the user’s needs and requirements. Norton offers comprehensive plans such as 360 Premium, 360 Deluxe, 360 Deluxe 3 Devices, and 360 Standard. Norton also offers basic antivirus plans and secure VPN services.

Its advanced security features protect you from existing and emerging threats to your system. It has an in-built password manager that stores and manages your passwords, credit card details, and other credentials. One of the most robust features of Norton is their firewall protection which blocks the unauthorized traffic from entering into your system. To protect you from data loss from ransomware and hard drive failures, it back-ups your essential documents and files. It offers various tools to execute maintenance tasks on your system.

ESET Antivirus

ESET is a highly customizable and effective antivirus program that protects you from dangerous malware and viruses. ESET works on a variety of operating systems like Android, macOS, Linux, and Windows. It blocks any unidentified access to your system and prevents misuse of your data.  It also protects your home router and blocks any unrecognized access to your webcam. It protects your online banking transactions and prevents your kids from offensive content. Its Anti-theft features allow you to track your computer in case it gets lost or stolen. It doesn’t slow down your system, and you can play games without any distractions like pop-ups.

Avira Free Antivirus

Avira is award-winning antivirus software that can be accessed for free. The software prevents advanced ransomware, spyware, and adware from entering your system. You can download Avira on Mac, Android, and iOS. It protects your system from various online threats, including Trojans, worms, and viruses. Along with protection, Avira antivirus offers advanced functionalities. It provides real-time updates via the cloud. As soon as a new threat is detected, all accounts are immunized adequately. Avira has a smaller footprint as compared to other antivirus software which makes it very light, and it doesn’t affect the speed of your computer.

Bitdefender Antivirus

Bitdefender Antivirus is an efficient software that protects your system from online threats without affecting its performance. It has a comprehensive virus database that is updated regularly to protect your system from advanced threats. Along with protection, it also offers various tools that can improve your system performance.

They offer two kinds of antivirus version:

  • Bitdefender Internet Security: It is a lighter version of the software, and it offers very few options. Along with malware and virus protection, it comes with the Safepay secure payment system, a password manager and it scans your system to check the vulnerability against online threats.
  • Bitdefender Total Security: Total Security offers basic protection features from online threats. Apart from essential elements, it provides spam filters, parental control systems, and a firewall.


In this age of hacking and online threats, protecting your device is the utmost priority. A lot of antivirus software protects your system, but it makes it slow. The software, as mentioned above, can protect your system from dangerous online threats and doesn’t affect the performance of your system.

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