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What is a Resident Virus? Examples and Protection

Resident Virus is a type of malware that hides and saves itself in the computer’s memory. Depending on how the virus is programmed, it can infect any file run by the computer. This type of virus can even attach itself to anti-virus software, allowing it to infect any file verified by the program.

What is a Resident Virus?

A Resident Virus is a type of computer virus that embeds itself into the memory of your computer. Once it’s in the memory, it can execute its malicious code whenever the operating system runs, without needing to infect specific files first. This makes resident viruses particularly dangerous because they can activate and replicate themselves whenever you turn on your computer, even if you don’t open or run a specific infected program. If a resident virus enters, it infects other files and programs. This Malware is one of the most harmful because it can penetrate any file examined by antivirus tools and attach itself to antivirus software.



Resident Virus Examples

Symptoms of Resident Virus

Protection from Resident Virus Attacks

Difference Between Resident and Non-Resident Virus

Feature Resident Virus Non-Resident Virus
Location Installs itself in the computer’s memory. Does not remain in memory; resides in the infected file.
Operation Can operate independently of the original infected file, affecting the system continuously. Needs the infected file to be executed to spread or cause damage.
Detection and Removal More difficult to detect and remove due to its presence in memory and continuous operation. Easier to detect and remove, as it is not active until the infected file is executed.
Method of Spread Can infect other files without any need for the infected file to be opened again after the initial infection. Spreads by replicating itself when the infected file is executed, then infecting other files and programs.
Stealth and Impact Often more stealthy and potentially more damaging because it can interfere with system operations directly. Less stealthy and its impact is limited to the times when the infected file is executed.
Examples Mebroot, Virat. Classic file infectors like the Cascade virus

Conclusion

Resident viruses are malware that hide in your computer’s memory, causing trouble without you even knowing. But by following some steps like using updated antivirus software, keeping your system updated, and being careful with what you download and open, you can keep these unwanted user away. Remember, staying safe online is all about being alert and prepared. So, keep your software up to date, and back up your important activity which must be performed regularly.

Frequently Asked Questions on Resident Virus – FAQs

Who made the resident virus?

The resident virus was created in 1986 by Amjad Farooq Alvi and Basit Farooq Alvi in Lahore, Pakistan.



Is memory a resident virus?

Memory-resident viruses are among the oldest and most common types of computer viruses, they are designed to reside and can hide in a computer’s memory, and can be activated whenever the operating system is running, infecting all files that are opened.

Can resident viruses be removed?

Yes, resident virus can be removed with antivirus software that is specifically designed to detect and eliminate them.

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