Why you should be alerted for computer viruses?

The computer viruses are made to make an app or a function not to work properly. And nowadays some idiots are making benefits out of it. Like black / red hat hackers. They analyze the user they want to attack for some days. And then they make a virus and somehow insert the virus to that person's PC / Laptop. It is a family of malware which tries to infect the other programs which are installed on your system. They modify the program code and insert themselves into it.

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How does computer virus enter my system?

• Even if you’re careful, you can pick up computer viruses through normal Web activities like: 
• Sharing music, files, or photos with other users 
• Visiting an infected website 
• Opening spam email or an email attachment 
• Downloading free games, toolbars, media players and other system utilities 
• Installing mainstream software applications without thoroughly reading license agreements 

How computer viruses are harmful

• Wasting system resources, sometimes intentionally, other times because they’re not coded well 
• Encrypting information, asking the user to pay to unlock it 
• Destroying data, causing an issue for companies and individuals 
• Stealing data from businesses, causing financial losses 
• Stealing money from bank accounts 
• Tampering with elections, potentially undermining a country’s system of government 
• Leaking private information, like military strategy, that could create panic or even cause a war to be lost 
• Spying on you, like taking pictures of you from your webcam 
• Pretending to be you, sending themselves around to all your friends to do whatever they want to their computers. 

Note that some of these things aren’t generally done by automated programs (malware), but usually by a hacker attacking a specific target. However, as malware becomes more advanced, its capabilities expand.

You can never be 100% safe from digital attacks, but you can make yourself a very unlikely target. There are a few simple steps you need to protect your data.

How to keep safe your computer system from viruses

• Use an antivirus software 
• Use strong passwords, and enable 2FA where available 
• Tape over your laptop webcam when you’re not using it 
• Don’t click on suspicious links 
• Don’t install programs if you’re not sure what they do 

If you prefer a simpler approach, you can usually remove a computer virus by using an antivirus software program. Using powerful antivirus software can help you prevent a virus attack on your system and reduce the risk of computer damage.

Always be careful and follow the rules of 'ABC'.