What are the 5 worst computer viruses?

6 worst computer viruses
  • Klez.
  • Sasser.
  • ILOVEYOU.
  • Conficker.
  • Shamoon.
  • Nimda.
Takedown request   |   View complete answer on swisscyberinstitute.com


What are the top 5 computer viruses?

The Top 10 Worst Computer Viruses in History
  • Klez – $19.8 billion. ...
  • ILOVEYOU – $15 billion. ...
  • WannaCry – $4 billion. ...
  • Zeus – $3 billion. ...
  • Code Red – $2.4 billion. ...
  • Slammer – $1.2 billion. ...
  • CryptoLocker – $665 million. ...
  • Sasser – $500 million.
Takedown request   |   View complete answer on hp.com


Which is the deadliest computer virus?

1. ILOVEYOU. ILOVEYOU is considered one of the most virulent computer virus ever created. It managed to wreck havoc on computer systems all over the world with around $10 billion worth of damages.
Takedown request   |   View complete answer on hongkiat.com


What is the Zeus virus?

The Zeus Trojan is an insidious malware kit commonly used to steal banking information. With millions of Windows computers infected, it's one of the most widespread and successful strains of malware in the history of the internet.
Takedown request   |   View complete answer on avast.com


What does ILOVEYOU virus do?

ILOVEYOU works via email, specifically via a malicious email attachment. When the affected user opens the attachment, their action instantly downloads the worm into their system without their knowledge and starts spreading it across the network.
Takedown request   |   View complete answer on techtarget.com


5 of the Worst Computer Viruses Ever



What are 10 examples of viruses?

Some examples of widespread computer viruses include:
  • Morris Worm.
  • Nimda.
  • ILOVEYOU.
  • SQL Slammer.
  • Stuxnet.
  • CryptoLocker.
  • Conficker.
  • Tinba.
Takedown request   |   View complete answer on proofpoint.com


Is the ILOVEYOU virus still around?

James Moore, senior consultant of MWR InfoSecurity: "It's been 20 years since phishing first originated, and 15 years since the ILOVEYOU bug wormed its way into mailboxes on May 4, yet still criminals use these methods to gain access to organisations. Why? Because, remarkably, they still work.
Takedown request   |   View complete answer on itproportal.com


Is Trojan virus harmful?

A Trojan horse (or Trojan) is one of the most common and dangerous types of threats that can infect your computer or mobile device. Trojans are usually disguised as benign or useful software that you download from the Internet, but they actually carry malicious code designed to do harm—thus their name.
Takedown request   |   View complete answer on mcafee.com


Is Avast a virus?

In the news AVG and AVAST are indeed malware. Probably the worst anti-virus scandal in history. if you searched for Avast it was still there in another place running in the background.
Takedown request   |   View complete answer on forum.avast.com


What is worm malware?

A computer worm is a type of malware whose primary function is to self-replicate and infect other computers while remaining active on infected systems. A computer worm duplicates itself to spread to uninfected computers.
Takedown request   |   View complete answer on techtarget.com


Can a Trojan steal passwords?

The password stealer being distributed in the attacks is known as Redline, a relatively common malware that steals all the usernames and passwords it finds on the infected system. Magnat previously distributed a different password stealer, Azorult.
Takedown request   |   View complete answer on zdnet.com


How did the Melissa virus work?

The Melissa virus, reportedly named by Smith for a stripper in Florida, started by taking over victims' Microsoft Word program. It then used a macro to hijack their Microsoft Outlook email system and send messages to the first 50 addresses in their mailing lists.
Takedown request   |   View complete answer on fbi.gov


What is Code Red malware?

Malware, or malicious software, is any program or file that is intentionally harmful to a computer, network or server. Types of malware include computer viruses, worms, Trojan horses, ransomware and spyware.
Takedown request   |   View complete answer on techtarget.com


Why was it called WannaCry?

The name was derived from strings of code detected in some of the first samples of the virus. WannaCry has been called a "study in preventable catastrophes" because two months before it first spread around the world in 2017, Microsoft issued a patch that would have prevented the worm from infecting computers.
Takedown request   |   View complete answer on mimecast.com


What are the 4 types of computer viruses?

The main types of computer virus are as follows:
  • Boot Sector Virus.
  • Direct Action Virus.
  • Multipartite Virus.
  • Polymorphic Virus.
  • Resident Virus.
  • File Infector Virus.
Takedown request   |   View complete answer on byjus.com


What are the 3 types of viruses?

They include:
  • Macro viruses – These are the largest of the three virus types. ...
  • Boot record infectors – These viruses are known also as boot viruses or system viruses. ...
  • File infectors – These viruses target .
Takedown request   |   View complete answer on austinmobilecomputerrepair.com


What are the latest computer virus?

10 Most Dangerous Virus & Malware Threats in 2022
  • Clop Ransomware.
  • Fake Windows Updates (Hidden Ransomware)
  • Zeus Gameover.
  • RaaS.
  • News Malware Attacks.
  • Fleeceware.
  • IoT Device Attacks.
  • Social Engineering.
Takedown request   |   View complete answer on safetydetectives.com


Is McAfee a malware?

McAfee Malware Cleaner (MMC) is a free tool that cleans malware, adware, viruses, and other threats from your Windows computer. You don't need to be a McAfee customer, or have a product subscription, to use McAfee Malware Cleaner. If you think your PC is infected, follow the steps below to download and run the tool.
Takedown request   |   View complete answer on service.mcafee.com


Do I have malware?

If you notice your homepage changed or you have new toolbars, extensions, or plugins installed, then you might have some sort of malware infection. Causes vary, but this usually means you clicked on that “congratulations” pop-up, which downloaded some unwanted software.
Takedown request   |   View complete answer on malwarebytes.com


Is malware a weapon?

Malware, short for malicious software, is the main weapon of cyber attacks. Malware is any piece of software that was written with the intent to damage a system, and aid hackers in gaining control over the target computer/device, perform forced actions, and access unauthorized data.
Takedown request   |   View complete answer on leachagency.com


What did the Blaster virus do?

Many security specialists rated that year as one of the worst ever for viral threats, which posed huge security risks for Internet users. The Blaster Worm caused a system to reboot every 60 seconds and in some computers, the worm caused an empty welcome screen.
Takedown request   |   View complete answer on techopedia.com


Who created Storm Worm?

4. The Storm Worm was traced back to Russian hackers, whose motives were profit. Researchers have concluded that a Russian hacker group in St. Petersburg were behind Storm.
Takedown request   |   View complete answer on hypr.com


Who made the iloveyou virus?

Onel de Guzman, a then-24-year-old resident of Manila, Philippines, created the malware.
Takedown request   |   View complete answer on en.wikipedia.org


What does a Trojan horse do?

What Is a Trojan Horse Virus? A Trojan Horse Virus is a type of malware that downloads onto a computer disguised as a legitimate program. The delivery method typically sees an attacker use social engineering to hide malicious code within legitimate software to try and gain users' system access with their software.
Takedown request   |   View complete answer on fortinet.com


What is RedLine stealer?

RedLine Stealer is a low-cost password stealer sold on underground forums. It steals passwords, credit card information and other sensitive data and sends it to a remote location. Leaked source code of this malware was analyzed in 2020 and 2021 by Cyberint and Proofpoint.
Takedown request   |   View complete answer on bitdefender.com
Previous question
How do I meet a high-value man?
Next question
Can you put lime on wet soil?