What is Virus

Viruses are available in several forms and are created with completely different intentions. Some corrupt or delete pc files whereas others are designed to copy till they use your RAM; rendering your pc unable to control. There are even viruses, like table games that are created as a joke and don't cause any real harm.

To date, there over one thousand thousand pc viruses exist, however solely a tiny low share of them are in mass circulation. solely some have created a disturbance and the financial price at the amount of these viruses listed on this page.

Ten of the foremost prolific viruses of all time

The following are a number of the viruses that resulted in widespread pc infections.

Storm Worm (also known as Qualcomm and Nuwar)

On January nineteenth, 2007, over two hundred million e-mails enclosed links to transfer the Storm Worm, which facilitates play a region within the overall attack. Most believe the worm gets its name from the actual fact that one in all the e-mail messages carrying the virus had "230 dead as storm batters Europe" as its subject.

• Different than the W32_Storm_Worm discharged in 2001, this virus was discharged and known in late 2007.
• Allowed hackers to manage the pc remotely, mistreatment it for malicious activity, like causing mass amounts of e-mail (spam).
• Propagated through pretend links to videos and news stories. Read more...

Netsky and Sasser Computer Worm

Netsky unfolds via e-mail and Windows networks, making massive amounts of web traffic and inflicting Denial of Service (DoS) attacks. At the time, Netsky and its variants were believed to be answerable for as several as twenty-fifth of all virus infections. Sasser replicated by finding alternative systems with vulnerabilities and forcing them to transfer the virus. Once on a brand new machine, it altered the package to create it troublesome for users to stop working their pc. Read More...

• Released in Feb and April 2004 severally.
• Created by 17-year recent Sven Jaschan.
• One of the few viruses to be caterpillar-tracked back to their creator. Read More...

MyDoom Computer Worm

This worm was distinctive in this it had a timer of kinds. The virus started Denial of Service attacks, then stopped distributing itself eleven days later. These attacks were aimed toward varied web servers, as well as attacks against search engines, inflicting many of them to crash et al to come back search results abundant slower than traditional.

• Released on Feb first, 2004.
• Replicated mistreatment e-mail and peer-to-peer networks.
• They created a backdoor that stayed open even once the worm stopped distributing itself. Read more...

Blaster Worm Computer Worm

Once this worm got onto a network, it unfolds faster as a result of firewalls typically did not block internal machines from employing a port the worm used. it had been stopped by filtering by ISPs and public awareness.

• Released in August 2003, the original creator is unknown.
• Infected several computers worldwide.
• Launched Denial of Service (DoS) attacks against Microsoft servers. Read more...

SQL Slammer Computer Worm

A prolific net server virus, the Slammer (also called Sapphire) infected nearly half the servers that facilitate run the web quarter-hour once its initial attack.

• Released in January 2003.
• Affected pc networks and systems, inflicting shutdowns and a variety of harm calculable at over $1 billion.
• Caused disruptions in Bank of America ATM service, and in Seattle's 911 services. Read more...

Nimda Computer Worm

Spreading through e-mail and websites, this worm targeted web servers, speed web performance nearly to a halt. It additionally opened a backdoor to the computer's package, permitting a hacker access to the pc. However, access was restricted by user account permissions.

• Released in 2001.
• The name is that the word "admin" is spelled backward.
• Fastest spreading trojan horse in history. Read more...

Code Red / Code Red II Computer Worm

These viruses exploited a vulnerability in Microsoft Windows 2000 and NGO, inflicting a buffer overflow. Code Red initiated Denial of Service attacks against White House net servers, whereas Code Red II opened a backdoor for hackers to access Windows 2000 systems.

• Released in summer 2001.
• Later blocked from spreading by Microsoft patch. Read more...

Klez Computer Worm

This virus was distinctive in this hackers reproduced in several forms. it had been additionally capable of spoofing to assist unfold the virus as recipients would suppose it had been returning from an addict.

• Released in late 2001.
• Distributed through e-mail.
• Capable of disabling antivirus programs and creating a pc unusable. Read more...

ILOVEYOU Computer Worm

Traveled through e-mail as a message from a secret admirer. once users downloaded the attachment referred to as WIN-BUGSFIX.EXE, the virus would copy and engraft itself in key files; as well as written record keys.

• Suspected to be created by Onel First State Guzman (Philippines) in 2000.
• Initially unfold through e-mail and later through IRC purchasers.
• Damage caused by the virus was calculable at around $10 billion. Read more...

Melissa Computer Worm

Once activated, the virus would replicate so sends itself bent the primary fifty folks within the address book of the recipient.

• Created by Smith in 1999.
• Created a multitude of state and public sector networks.
• Caused some e-mail suppliers to clean up e-mail services till the virus was contained. Read more...