Most of you are already aware of basic ways to protect your system from becoming infected. For the knowledge of new users,we will try to cover almost all techniques through which viruses infect your system and then methods to protect your system against these attacks.
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| Prevent PC or Laptops from Viruses or Trojans |
If you want to know if your system is infected by either viruses and trojans then there are certain techniques, symptoms, and guidelines which will help you identify the problems. Similar to the human body being infected with a virus, a computer will also demonstrate symptoms to tell you that something is wrong. Here are some symptoms of a computer virus:
1. Your computer might be running slower than normal (decreased efficiency means slow processing, sometimes system lags, etc.).
2. Some programs might open without your permission.
3. System start up takes too much time to boot.
4. Various error messages appear on the screen when you open something.
5. System registry or task manager has been disabled or folder options is missing.
6. The most important: antivirus shows messages of detecting viruses, or in some cases unable to update antivirus, or sometimes not even able to install any new antivirus or security software.
7. While scanning your system with antivirus or anti spyware tool, it shows viruses but they’re not deleting.
Have you ever tried to understand how your system gets infected? What has infected your system? Is it because of your friend? A USB? Or maybe your online activity somehow resulted in infection of your PC or laptop? Today I will share each and every thing that can infect your system and how you can fix your PC or laptop if it’s already infected.
Did a system got infected because of your negligence or lack of awareness?
1. Using Cracked Versions of software, especially security ones like antivirus and anti-spyware
This is the primary cause of infection on a device. Hackers know that users often look for cracked versions, and are willing to exploit that. If we attach a trojan or a virus, and you receive an alert but you ignore, then you have not gotten rid of the trojan.
NOTE: If your antivirus doesn’t show any keygen or crack as a virus DON’T ASSUME THAT IT’S NOT A VIRUS. Most likely it’s a more advanced virus and you have been infiltrated. Please do not use cracked software.
2. Pen drive or USB drive :
The next biggest cause of infection to your system is USB and external hard disks.
Now how a virus enters into your system using USB drives. You have connected your USB drive to your friend’s computer and by chance your friend’s system is infected by a virus or Trojan, one with the property to replicate itself using memory. You take your USB back, plug it into your computer, and now your system is infected as well. If you are using good antivirus software, your antivirus will send you warning and alert messages – don’t ignore those.
3. Downloading things from unknown sites:
Users frequently search for files over the internet to download. Hackers know that certain icons have huge followings, and often they will bind malicious codes to files so that when users download wallpapers or other files to their system, the virus comes with it.
Now after discussing these things, you know your system was infected through negligence. It’s time for you to learn how to protect and defend your system from viruses and trojans.
HOW TO STOP VIRUS OR TROJANS
1. Using A Good Antivirus:
There is a common misconception that the best anti-virus softwares require payment. This is one of the reasons that people go for cracked software. Here is one of the best free anti-virus softwares I have ever found.
Best Free Antivirus : Avira Personal Antivirus i.e Antivir. Avira is still the best free antivirus available on the internet because of its expert configuration ability.
You can download avira for free from:
http://www.filehippo.com/download_antivir/
After downloading the antivirus, you need to make it as good as a paid antivirus.
a. Install the antivirus and update it. Note updating antiviruses regularly is compulsory. Don’t worry, it will update itself automatically whenever an update is available.
b. After installation, at the top right-hand corner you will see a “CONFIGURATION” button. Just click on it and a new window will pop up.
c. At the top left-hand corner you will see a click box. Click on that. Now you will see several things in it.
1. Click on “Scanner.” Click on all files and set the “Scanner Priority” to high and click apply.
2. Click on “Guard” and click on all files and click on “Scan while reading and writing” and then click apply.
3. Click on “General” and click on select all and then apply. In “General,” tab to the WMI section and click on advanced process protection and then click apply.
4. After doing that, restart your PC.
Now you have made your free antivirus equivalent to a paid one.
Best Free Anti-Spyware: Spyware Terminator with crawler web security toolbar.
Download it for free :
Install spyware terminator with web security tool bar. Now the following problems are solved:
1. No Trojan can attack you.
2. Protection from malicious websites.
2. Solution for cracked versions of software:
As I mentioned earlier, never download cracks and keygens directly to your system. Several other methods are available. First, try to search for a Serial Key. If you didn’t find one then follow the next steps.
Before downloading any Crack and Keygen, go to the Website:
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Now copy the download link of the Keygen or crack in the URL box provided on the website. This website contains all the world famous antiviruses and will scan files for you.
3. Pen drive or USB drive solution:
For windows 7, read my last article:
For windows XP, follow these steps:
How you can protect your system from being infected from the pen drive. Do the following three things, the rest is being cared for by your antivirus.
1. Turn off Auto Play Devices:
To do it, go to Start Menu–> RUN–>type gpedit.msc and press enter–>User Configuration–>Administrative templates–>System–>Turn off Autoplay–> click on enable and then select all drives.
2. Turn off Computer Browser service:
To do it go to Start Menu–> RUN–>type services.msc and press enter–>then Find Computer Browser service, disable it and then restart your system.
3. Most importantly, always scan pen drives or external hard drives after connecting them.
The best alternative is to use Linux, as there is no autorun or autoplay concept in Linux operating system.
4.Downloading Stuff from Unknown Sites Solution:
The solution of this problem is already provided. The web browser security toolbar will help you while surf only secured and genuine websites.
For Hackers
1. Use Deep Freeze on C drive: Always use deep freeze for testing hack tools. After the next restart, your system will be in same position it was previously, so this is a safe place to test tools.
2. Install Virtual Box, and over virtual box install another windows and test all hack tools using virtual windows. This will protect your system from being infected. It will also give you more knowledge about handling the viruses and other situations.
3. Use Sandbox browser to test run the downloaded files.
4. Create two to three fake email IDs and use them for testing Keyloggers and other fake email hacking software.
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