What isCompanion Virus

A type of computer virus targets a DOS function that allows different programs with the same name but different extensions to run at various priorities. It creates a file with the same name as an existing program but a different extension and runs it before the actual program is launched. This often causes the original program to run, leading to the user being unaware that a virus has been installed.

The Dangers of Program Virus on Your Computer

What is a Program Virus?

A program virus is a specific type of computer virus that affects a DOS function that allows programs with the same name but different extensions to run at different priorities. This means that the virus produces a file with the same name as legitimate programs on your computer but with a different extension, such as “.com” instead of “.exe”.

How Does a Program Virus Work?

When you launch a program with the same name as the virus-produced file, the virus runs first before the legitimate program is launched. This can lead users to believe that everything is normal, leaving them unaware that a virus has been installed on their computer.

What Are the Dangers of Program Virus?

The danger of a program virus is that it can infect your computer without your knowledge, leading to potential data loss, theft, and damage to your computer system. Program viruses can also be used to steal personal information, such as login credentials and financial information, which can then be used in fraudulent or criminal activities.

How Can You Protect Your Computer from Program Virus?

Here are some basic tips to protect your computer from program viruses:

1. Install reliable anti-virus software and keep it updated regularly.

2. Avoid downloading suspicious files or software from untrusted sources.

3. Regularly update your operating system and software to patch vulnerabilities and ensure that they are running the latest versions.

4. Use a strong and complex password for all of your accounts and change them periodically.

5. Enable the firewall on your computer to prevent unauthorized access to your system.

In Consequently, program viruses are a serious threat to computer security and can cause significant damage if left undetected. By following the tips above, you can protect your computer from program viruses and other types of malware, ensuring that your personal information and data remain safe and secure.

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