कम्प्युटर भाइरस | what is computer virus

 computer virus is a malicious software program that replicates itself and spreads from one computer to another without the knowledge or consent of the computer's user. It is designed to disrupt the normal functioning of a computer system, steal or destroy data, or gain unauthorized access to sensitive information.

Computer viruses are typically created by hackers or cybercriminals with malicious intent. They can be 

transmitted through various means, such as infected email attachments, malicious websites, or downloading infected files from the 

internet. Once a computer is infected, the virus can execute its code and perform its intended actions, which can range from displaying annoying pop-up messages to causing serious damage to the system.

Worms: These viruses are designed to replicate and spread across networks, exploiting vulnerabilities in operating systems or software.

Trojans: These viruses are disguised as legitimate software or files, tricking users into downloading or executing them. They can provide unauthorized access to the infected computer or steal sensitive information.

Ransomware: This type of virus encrypts files on the infected computer and demands a ransom in exchange for the decryption key. Ransomware attacks have become increasingly common in recent years.

Spyware: Spyware viruses are designed to monitor a user's activities, gather personal information, and transmit it to a third party without the user's consent.

Preventing and protecting against computer viruses involves taking various security measures, such as:

Using reputable antivirus software and keeping it up to date.

Regularly updating your operating system and software applications to patch any vulnerabilities.

Exercising caution when opening email attachments or downloading files from the internet, especially from unknown or suspicious sources.

Avoiding clicking on suspicious links or visiting malicious websites.

Enabling firewalls and using strong, unique passwords for all your accounts.

If you suspect that your computer is infected with a virus, it's important to run a full scan with your antivirus software and follow its recommendations for removal. In some cases, you may need to seek professional help or use specialized tools to fully remove the virus and repair any damage it has caused.