Tips on how to prevent computer worms?

Computer worm is a type of malicious software or program that spreads within its connected network and copies itself from one computer to another computer. In this article, we will discuss some basic tips on how to prevent computer worms.

It exploits the security holes of the software application and trying to access in order to damage sensitive information, corrupting files and installing software for remote access to the system.

Tips: How to prevent computer worms

These are some preventive measures that you can do regularly to protect your computer, and your network, safe from worms. The basic tips for how to prevent computer worms and virus are as follows:

1. Install good anti-virus software

Antivirus software is the first preventive measure on how to prevent computer worms and virus. It is a program that helps protect your computer against viruses, worms, Trojan horses, and malware. It scans every file to your computer and helps to prevent damage to your computer system.

Most of the people are using free anti-virus software or using the following windows security software, which are not bad but they are inefficient in safeguarding your computer.


It is recommended that if you use the Internet then you should use professional anti-virus software and keep updated with latest version.

Antivirus software

2. Do not download untrusted email attachments

When you will receive an email with an attachment file from unknown source, which may be suspicious e-mail. The attachment file can contain malicious script, if you download and open the file then malware will execute and infect to your computer.


Don’t download the untrusted email attachments or documents to prevent from computer worms.

3. Never download software from unreliable sites

Viruses are hidden in the files or programs and it will enter your computer whenever you download the software, apps and other content from unknown sites.

Cyber security expert recommended that download the applications and software’s only from trusted sites but our common habit is that, we are downloading the software without checking the site is reliable or not.


So, don’t download the software, apps and other content from unknown site and without verifying their legitimacy because these sites may contains malicious script which will infect to your computer.

4. Keep All Software Updated

You have to ensure that your all used software is updated with latest version such as from anti-virus software to operating systems. The main reason for downloading and installing the latest version software is to stay protected from computer virus and worms.

Old version software may have some bug or vulnerabilities in source code and when a latest version of software is released, the version usually includes fixes for those types of security vulnerabilities.

5. Never open suspicious e-mail attachments

Whenever you download the files of email attachment with extension .exe, vbs, shs, pif, cmd etc. so, there has a chance to infect virus into your computer.

For your kind information, these types of extensions are never used in normal file attachments but they are frequently used by viruses and worms.

Some others attachments may contain an executable code with double extension like hi.doc.exe or name.txt.vbs and if you open such types of files, then virus will infect into your system.


So, it is better to check the file extension before you download and scan the attachment file.

email attachment

6. Regularly back up your important files

A data backup is a process copying or archiving important data files and documents for the purpose of being able to restore data in case if your computer is infected with a virus or malware.

It is the easiest way to recover your data files from backup storage when data has been lost by computer virus, worms or cyber threats.


You can take regular data back-up manually or automatically by archiving important documents to an external hard drive or your suitable place.

 7. Regular scan your computer

One of the easiest and best ways on how to prevent computer worms and virus is regularly scanning your computer with antivirus software.

When you have installed anti-virus software, you should first scan your entire computer. If your installed anti-virus has the ability to automatically scan files or directories so, enable this feature with your suitable time.


It is suggested that completing a full scan every two weeks or a single full scan per month is usually enough. A full scan takes several hours, depending on how much data you have in your computer.

8. Use a firewall

A firewall is a security tools which is designed to monitors incoming and outgoing network traffic based on security rules and protects your system. Its main purpose is to create an obstacle between internal and external network in order to protect cyber threats.

If your computer ports are open, then a malicious script can sent by an attacker and gain unauthorized access. A windows firewall can acts as a simple defence by closing all ports.

  • In Windows operating system, this can be found by navigating to:
    • First, Choose Start→ Control Panel→ System and Security→ Windows Firewall.
    • Then, click the Turn Windows Firewall On or off link in the left pane of the window.
    • Select the Turn on Windows Firewall radio button for one or both of the network locations.
    • And Click OK.
  • You also can use a web application Firewall to protect your software application form cyber threats.

9. Use SSL Certificate

Secure Sockets Layer (SSL) is a global standard web security protocol which creates a secure connection between a website and browser.

SSL ensure that all data passed between a web server and browser remains encrypted and secure. This encryption technique prevents from hackers to stealing sensitive information such as credit card details, names and addresses.

In case, if a site is secure by SSL then a padlock is displayed or the address bar shows the URL as HTTPS instead of HTTP.

SSL certificate

10. Avoid unsolicited e-mail

If you receive e-mail advertisements or other unsolicited e-mail, so there can be a malicious script or link to infect into your computer. If you click on that link, then it will redirect to you a vulnerable website to steal your information.

  • It is suggested to you, do not open unsolicited e-mail attachments or don’t click on that link.
  • You also should avoid attachments with sexual filenames because worms often use attachments with sexual filenames such as PORNO.EXE or PAMELA_NUDE.VBS to enticement users.

How to remove computer worm

To remove a computer worm, simply install antivirus software and run a scan for computer virus and worms. Once any virus and worms are detected and deleted by antivirus, then your computer will be completely safe to use.

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