Antivirus software is an important part of your computer. We have been hearing thousand of hacking news daily. Hacker attacks are not only on home users but also on large corporations and Governments . If you want to make your system clean and secure you need to install a good antivirus software in your PC..Now a days an Antivirus along can’t help us because of the large use of internet , Phishing and other online threats increase , so we need a Internet security software than a simple antivirus software.Internet security provide protection against internet threats and also against virus. Internet security software also includes antivirus software. Internet security has all function of antivirus plus web protection. Here we are talking about 5 best Internet security software for your old computer’s. Most of the new software’s need high system requirements it will make your system dead slow.

Here is the list of 5 light weight Antivirus + Internet security softwares

Microsoft Security Essentials

It is a free antivirus software from Microsoft , it scan your computer and internet attacks. Mainly it used for scan computer.

Real-time protection
System scanning
System cleaning
Windows Firewall integration
Dynamic signature service
Rootkit protection
Protection against real threats, not good software

System requirements : Genuine Windows XP, VIsta , 7 or 8
For Windows XP, a PC with a CPU clock speed of 500 MHz or higher, and 256 MB RAM or higher.For Windows Vista and Windows 7, a PC with a CPU clock speed of 1.0 GHz or higher, and 1 GB RAM or higher.
VGA display of 800 × 600 or higher.
200 MB of available hard disk space.
An Internet connection is required for installation and to download the latest virus and spyware definitions for Microsoft Security Essentials.

Pros : Free software
Better performance
Simple user interface
Better virus information data base
Better threat finding
Delete virus automatically when we plug USB drives
Frequent updates

Cons : Lack of Internet security features
Slow full scan – faster  Custom and Quick scan 
Available only to Genuine Windows users , it is difficult to install in pirated copies

Download Microsoft Security Essentials 

2. Norton Internet Security software

Symantec is one of the largest security software company in the world.They make software for both Business and home users. Norton internet security software is for Home and Office users.

Pros : Better protection
Safe web , Facebook ,Twitter like social media scanning
Fast scanning
Frequent updates
One minute installation and Uninstalltion 
Parental control , PC optimization
Good scanning rate
Secure payments

Cons : It is not free

We did’t find anyother draw backs.It is good for Home and Office users

System Requirements :

Operating Systems Supported
Microsoft® Windows® XP (32-bit) Home/Professional/Tablet PC/Media Center (32-bit) with Service Pack 2 or later
Microsoft Windows Vista® (32-bit and 64-bit) Starter/Home Basic/Home Premium/Business/Ultimate with Service Pack 1 or later
Microsoft Windows 7 (32-bit and 64-bit) Starter/Home Basic/Home Premium/Ultimate

Minimum Hardware Requirements
300 MHz for Microsoft Windows XP, 1 GHz for Microsoft Windows Vista/Microsoft Windows 7
256 MB of RAM
300 MB of available hard disk space
CD-ROM or DVD drive (if not installing via electronic download)

Download Norton Internet Security

3. Avast Internet security 

Avast is also a good security software and one of the most downloaded software. It also included in the top 10 anti virus lists.

Pros: Good user interface
Frequent updates
Fast scanning
Good for Home and Office users 
Real time protection
Secure Banking

Cons:It is not free

System requirements 

Windows 7 (any Edition, 32-bit or 64-bit)
Windows Vista (any Edition excl. Starter Edition, 32-bit or 64-bit)
Windows XP Service Pack 2 or higher (any Edition, 32-bit or 64-bit)
Minimum Hardware Requirements
Pentium 3 Processor
256 MB RAM
380 MB of free hard disk space

Download Avast Internet Security

4. Comodo  Internet Security 

Comodo Internet Security is the free, multi-layered security application that keeps hackers out and personal information in.

Built from the ground upwards with your security in mind, Internet Security offers 360° protection by combining powerful Antivirus protection, an enterprise class packet filtering firewall, advanced host intrusion prevention and automatic sandboxing of unknown files.

Unlike the stripped down versions of commercial software that other software vendors offer for free, this is the full, completely functional version of the product.

 Default Deny Protection™ (DDP)   
Prevention-based protection  
Auto Sandbox Technology™  
Personalized protection alerts   
Spyware Scanning   
Cloud based Antivirus  
Cloud based Behavior Analysis  
Cloud based Whitelisting  
Malicious website filtering  
Game Mode  
Application Control  
One-click virus scanning  
Uncluttered, user-friendly interface
Thorough security “wizards”   
Unique “slider” to easily change your current security level
Exclusive access to Comodo’s “safe-list”

Cons:It is not free
No other drawbacks

System Requirements:
Windows 7 / Vista / XP SP2, 152 MB RAM / 400 MB space

Download Comodo Internet Security 

5.ESET smart security 5
ESET Smart Security utilizes the power of the cloud and multiple layers of detection to keep out threats and block all potential attacks vectors protecting you at the highest level while you work, social network, play online games or exchange data via removable media..Smart Security is so called because of it’s all in one protection.

ESET Live Grid (Cloud-powered Reputation) NEW
Parental Control NEW
Smart Detection
Intelligent Firewall
Improved Antispam
Enhanced Media Control NEW
Advanced HIPS Functionality NEW
Gamer Mode NEW
Optimized Startup Procedure NEW
Free upgrade to ESET 5 for existing license holders

System requirement

Processor Architecture
i386 (Intel® 80386), amd64 (x86-64)

Operating Systems
Microsoft Windows 2000
Microsoft Windows XP
Microsoft Windows Vista
Microsoft Windows 7
Microsoft Windows Home Server

Free Disk Space: 400 MB
Memory Consumption: 100 MB

Download  ESET smart security 5 

About Author :   I am Susan Hannan from Test4Prep; it gives 100% 1Y0-A25 test exams. Let’s take benefit of 1Z0-058 test Exams material efficiently and get guaranteed success. Check out free demo of all certifications Exam.