Top 5 dangerous Viruses ever created-Based on loss caused

Top 5 dangerous Viruses ever created-Based on loss caused

What is Virus?

A malicious Software program formally called ‘Malware’ , once executed,  start replicating itself to modify other computer program and injects its own code, once executed. It is reported that these computer viruses has caused more than billions of dollars loss this year. Most computer viruses are designed to target computer running Microsoft’s Windows. Using most sophisticated and complex and hard to detect through most of the Anti-virus software.

Types of Computer Virus.

However the term “Virus” is erroneously used to refer some other types of malwares. Such as computer “worms,spyware, adware, trojan horses, “, ransom ware,  keyloggers, malicious Browser Helper Object (BHOs) , rootkits, bootkits, and other malicious software. Trojan horse programs or computer worms are the most known active malware. In 1985 Fred Cohen coined the name Virus a misnomer. Accruing the victim hard disk, or CPU(Central Processing Unit), Attempting private data, Corrupting data, spamming, fishing, logging the keystrokes are the main performance of these viruses.

In this Article we have collected top 5 dangerous Viruses ever created on the basis of the loss they caused and the complicity of the design.

Top 5 dangerous Viruses ever created-Based on loss caused

5. Zeus

Top 5 dangerous Viruses ever created-Based on loss caused

A virus actually a Trojan Horse, designed to attack Windows running computers to perform severe criminal tasks. The task includes  man-in-the-browser keylogging and form grabbing. This trojan Horse virus was first  identified in 2009, It compromised the majority of FTP(File Transfer Protocol) and PCs from huge MNCs. The main victim includes, Bank of America, Amazon, Oracle, Cisco, etc. Zeus botnet was used to steal login credentials of social network, Email and Bank Details etc.

4.Sasser

Top 5 dangerous Viruses ever created-Based on loss caused

Windows worm created by a Computer Science Graduate, Sven Jaschan, he is also known for creating the Netsky worm. Sasser Was discovered in 2004, the worm was created to slow down the victim’s computer running Windows. the effects were incredibly disruptive, with millions of computers being infected, and important, critical infrastructure affected.



3.CryptoLocker

Top 5 dangerous Viruses ever created-Based on loss caused

A form of Trojan horse ransomware, targeted computers running Windows. It uses several methods to spread itself, such as email, and once a computer is infected, it will proceed to encrypt certain files on the hard drive and any mounted storage connected to it with RSA public key cryptography. The only way to unlock the files is to pay a ransom by a deadline. If the deadline is not met, the ransom will increase significantly or the decryption keys deleted. The ransom usually amount to $400 in prepaid cash or bitcoin.

2.Conficker

Top 5 dangerous Viruses ever created-Based on loss caused

Conficker  also known as Downup or Downadup, a worm with unknown author created to attack Windows, was appeared first in 2008. Conficker infected computers using flaws in the OS to create a botnet. The Malware infected more than 9 billions of computers around the globe. Conficker is one of the most known largest worm ever identified

1. I LOVE YOU

Top 5 dangerous Viruses ever created-Based on loss caused

I LOVE YOU virus , considered one of the most virulent computer virus ever created and it’s not hard to see why. This caused a huge wreck havoc on computer systems all over the world, a total estimated loss of $10 Billion. Almost 20% of World internet was infected. Government was provoked to take their mailing system offline for the prevention of infection.

In 1985 Fred Cohen coined the name Virus a misnomer. Accruing the victim hard disk, or CPU(Central Processing Unit), Attempting private data, Corrupting data, spamming, fishing, logging the keystrokes are the main performance of these viruses.In this Article we have collected top 5 dangerous Viruses ever created on the basis of the loss they caused and the complicity of the design.

A. R. Krishna

I.T. Professional completed my B.E. , a blogger Enthusiast, Software developer, and a ICT freelancer. While working as freelancer I have worked with some great people and agencies that taught me lots of things.

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