A computer virus is a malicious piece of software that can spread to other computers without the user’s knowledge or permission and can cause significant damage to the user’s files and applications. The term “virus” is commonly used to refer to a computer threat. While many forms of malicious software go by this name, not all viruses cause harm. A virus must run to replicate and spread. Computer viruses frequently infect other programs so that they can be run.
Very few common viruses
Some viruses are executable files or file viruses. The code in these files is activated whenever the host application (an executable, driver, or compressed file) is launched. After being activated, the virus may replicate by latching onto other applications in the system and carrying out the intended action.
After loading into system memory, most file viruses infect other programs on the drive. If a virus is detected, the program’s code will be altered to incorporate and launch the virus on the subsequent execution. This process is repeated until the infection has spread throughout the system and possibly to other computers via the infected program. These viruses not only disseminate themselves but also have a harmful component that can be released immediately or once a specific ‘trigger’ is met. A specified date, the number of times the virus has replicated, or some other insignificant event could be the trigger.
Perhaps a virus is Viruses that infect the boot sector of a hard drive and compromise its most fundamental function. A virus can ensure that its code loads into memory at every boot by introducing it into the boot sector. Disks that hold files are the targets of a boot virus rather than the files themselves. Boot viruses are still around, but they aren’t as common as other forms of malware. Another reason they are not more common is that modern operating systems have safeguards to prevent damage to the boot sector.
Files made in software like Microsoft Word, Excel, PowerPoint, Corel Draw, Adobe Photoshop, etc., that use macros are vulnerable to infection by macro viruses. Since macro viruses are written in the application’s language rather than the operating system’s, they are platform-independent. They can infect any system running the requisite application, regardless of whether it is running Windows, Mac, or Linux.
An email virus may be a macro virus that copies and sends itself to everyone listed in the host’s address book. If any of the receivers of the infected email opens the attachment, the virus is released into the network. It replicates itself across all addresses in the new host’s address book. Previewing the malicious email in a mail client is enough to infect the host system with the virus.
It only takes a few steps to get our PC work done.
Microsoft customers often use a Microsoft-approved antivirus program, which they regularly update via the company’s website.
To update to the most recent version of Microsoft software, go to their website.
Third, always use and update reliable anti-virus software from a trusted developer.
Fourth, make virus scans a regular part of your routine and set them to run automatically whenever your computer is booted. This will prevent harm to your computer by scanning executable files for viruses every time they are opened.
5. Stay away from bootlegged software CDs
Be careful about downloading and opening files during online chats; this appears to be a typical entry point for viruses.
Take frequent backups. 7. If your computer has been infected with a virus that deletes or corrupts files, you may need to restore it from a recent backup.
It takes a human to propagate a virus from one computer to another, so be cautious about opening anything sent to you by email or instant messaging unless you are pretty sure you can trust the sender. If you receive an unexpected email with an executable file attached to it, you should delete it until you can determine for sure what it is, who provided it to you, and why. The prevalence of spam remains alarming. Spam constitutes 90% of all e-mail. Don’t fall for fake links purporting to come from your financial institution. Also, disregard any cookie-cutter suggestions that could land in your mailbox.
Because your computer is always connected to the internet, even if you aren’t using it, a firewall or anti-virus program is essential if you watch films online, play games via a P2P network, or utilize a broadband internet connection. It is highly suggested that you turn off the option for this software to automatically run any JavaScript, Word macros, or other executable code that may be embedded in or attached to a message. To ensure the attachment is virus-free, save it to your computer and run a virus scan.
Be careful you use up-to-date anti-virus software. The primary cause of PC infections is anti-virus software that has not been updated. There are automatic updating functions in many programs. Turn them on, and you can stop worrying about keeping an eye on the program yourself.
Read also: You may “Be Everywhere” with the help of a mobile-friendly website.
