“What is Computer Virus? Types, Symptoms and Prevention

                                              What is virus on computer ?

A Computer Virus is a harmful program (malicious software) designed to damage, disrupt, or steal information from a computer system. It can spread from one device to another, corrupt files, slow down the system, and even cause complete system failure.

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🦠 Types of Computer Viruses

1. File Infector Virus

Infects executable files (.exe) and spreads when the file is opened.

2. Boot Sector Virus

Targets the boot sector of storage devices and can prevent the system from starting.

3. Macro Virus

Infects documents like MS Word or Excel using macros.

4. Trojan Horse

Looks like a normal program but performs harmful activities in the background.

5. Worms

Spread through networks without attaching to any file; replicate automatically

⚠️ Symptoms of Computer Virus Infection

If your computer is infected, you may notice:

• System running very slowly

• Frequent crashes or freezing

• Files getting deleted or corrupted

• Unwanted pop-up advertisements

• Unknown programs installing automatically

• Excessive internet data usage

• Hard disk making strange noises

• websites

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🛡️ Prevention: How to Protect Your Computer from Viruses

✔ 1. Use a Quality Antivirus

Examples: Windows Defender, Avast, Quick Heal, Kaspersky.

✔ 2. Keep Your Operating System Updated

Updates fix security weaknesses.

✔ 3. Avoid Untrusted Downloads

Do not download software from unknown or illegal websites.