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Cyber crime & security |#NDKtechnology

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According to wikipedia.org Cyber crime is defined as

Cybercrime is a crime that involves a computer and a network. The computer may have been used in the commission of a crime, or it may be the target. Cybercrime may harm someone's security and financial health. 


Virus & malware 

What are the different types of Malware?
  • Worms. Worms are spread via software vulnerabilities or phishing attacks. ...
  • Viruses. Unlike worms, viruses need an already-infected active operating system or program to work. 
  • Bots & Botnets. 
  • Trojan Horses. 
  • Ransomware. 
  • Adware & Scams. 
  • Spyware. 
  • Spam & Phishing.



Cyber security 

According to wikipedia.org,

Cyber security is the application of technologies, processes and controls to protect systems, networks, programs, devices and data from cyber attacks. It aims to reduce the risk of cyber attacks and protect against the unauthorised exploitation of systems, networks and technologies.




Top 10 most notorious cyber attacks in history
  • Teen hacks NASA and US Defense Department: ...
  • Phone lines blocked to win Porsche (1995) ...
  • Hacker targets Scientology (2008): ...
  • Solar Sunrise (1998): ...
  • The Melissa virus (1999) ...
  • Internet attacked (2002): ...
  • Hacker steals tens of million of credit card details (2009):



Top asked question



How we get hacked?

From opening different links, images, videos, emails etc. that contains ransomware (viruses and malware) 


Why Virus creators and hackers hack our systems?

Mostly for money. If the attacked systems are federal systems or important or confidential systems then the hack is for obtaining information. 


What do hackers or viruses do to our computer if we are hacked?

They will mostly encrypt all files and lock the computer. 


How to get my computer back?

If computer is only encrypted and not locked then install anti virus programs. 

Can I pay to the hacker and get my encrypted files back?

No you cant. Legally it is illegal. 



Crypto currency and dark web

what is dark web?

The dark web is the World Wide Web content that exists on darknets: overlay networks that use the Internet but require specific software, configurations, or authorization to access.




Crypto currency 

A cryptocurrency (or “crypto”) is a digital currency that can be used to buy goods and services, but uses an online ledger with strong cryptography to secure online transactions. Much of the interest in these unregulated currencies is to trade for profit, with speculators at times driving prices skyward. 

Main cryptocurrencies 

  • Ethereum (ETH) ...
  • Litecoin (LTC) ...
  • Cardano (ADA) ...
  • Polkadot (DOT) ...
  • Bitcoin Cash (BCH) ...
  • Stellar (XLM) ...
  • Chainlink. ...
  • Binance Coin (BNB)



Cryptocurrency to normal money calculator 


1 Bitcoin equals
45,288.80 United States Dollar
Sep 12, 06:19 UTC · Disclaimer

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Major references 










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