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Vi Vu
Virt Viru

Virus

What is a Virus?

A computer virus is a malicious program that spreads from host to host. These harmful programs can replicate and spread through files and documents. Viruses have existed for decades. The first virus was created in 1971.

Hackers design and distribute viruses to alter the way a computer works. The malware inserts or attaches itself to a legitimate program or document that supports macros to execute its code.

A virus causes adverse impacts on computers, such as disrupting regular system operations, logging keystrokes, spamming your email contacts, stealing sensitive information, or destroying data.


Key Takeaways


How a Hacker Uses Viruses to Attacks Systems

A virus attaches itself to a program, file, or document and stays dormant waiting for specific user and system activities to trigger its code to execute. For instance, a user sets off a virus execution by running an infected program in their devices.

In the current connected world, hackers can infect your computer in many ways. Some of the infection methods include:

What Can a Virus Do to Your System?

A computer virus can adversely affect a system. Some of the malware’s impacts include:

Different Types of Computer Viruses

There are different types of viruses, including:

What are the Signs of a Virus-Infected Computer?

You can tell if your computer has a virus if you notice the following signs:

How Can You Prevent Viruses?

  1. User awareness – To protect your systems and networks from viruses, you need to be vigilant when surfing the Internet. Avoid downloading files or opening strange links and attachments sent via emails. Carefully evaluate free games and software before installing them.
  2. Security programs – you can install a trusted antivirus program. Keep your antivirus product updated with the latest virus signatures. Firewalls also monitor incoming and outgoing internet traffic and hide your computer from online scammers.
  3. File scanning – always scan online files before opening them
  4. Update your OS and applications – a virus exploits vulnerabilities in your operating system and applications code to infect your systems. Patching your OS and software programs seals the holes and prevents virus code execution

How Can You Remove Viruses from an Infected Computer?

You can use antivirus software to remove computer viruses. The security product allows you to scan to check for viruses in your device.

George Mutune

I am a cyber security professional with a passion for delivering proactive strategies for day to day operational challenges. I am excited to be working with leading cyber security teams and professionals on projects that involve machine learning & AI solutions to solve the cyberspace menace and cut through inefficiency that plague today's business environments.