Question: What Are The 3 Most Dangerous Computer Viruses?

Is Trojan a virus?

A Trojan horse or Trojan is a type of malware that is often disguised as legitimate software.

Trojans can be employed by cyber-thieves and hackers trying to gain access to users’ systems..

Is Love Bug a virus?

The Love Bug virus was unleashed on May 4, 2000. It was simple, but devastatingly effective and highly contagious. Once infected, many of the user’s files would be overwritten with copies of the virus, so that whenever the victim tried to open the files, they’d reinfect their system.

What is the most common computer virus?

Understanding the Six Most Common Types of MalwareVirus. Viruses are designed to damage the target computer or device by corrupting data, reformatting your hard disk, or completely shutting down your system. … Worm. … Trojan Horse. … Spyware. … Adware. … Ransomware.

What does the I Love You virus do?

The ILOVEYOU virus comes in an e-mail note with “I LOVE YOU” in the subject line and contains an attachment that, when opened, results in the message being re-sent to everyone in the recipient’s Microsoft Outlook address book and, perhaps more seriously, the loss of every JPEG, MP3, and certain other files on the …

Where do viruses hide on your computer?

Viruses can be disguised as attachments of funny images, greeting cards, or audio and video files. Computer viruses also spread through downloads on the Internet. They can be hidden in pirated software or in other files or programs that you might download. Microsoft PC Security website.

What is the first known computer virus?

the Creeper programAs noted by Discovery, the Creeper program, often regarded as the first virus, was created in 1971 by Bob Thomas of BBN. Creeper was actually designed as a security test to see if a self-replicating program was possible.

How do you tell if your computer has a virus?

If you notice any of the following issues with your computer, it may be infected with a virus:Slow computer performance (taking a long time to start up or open programs)Problems shutting down or restarting.Missing files.Frequent system crashes and/or error messages.Unexpected pop-up windows.More items…•

What does a virus do to your computer?

What does a computer virus do? Some computer viruses are programmed to harm your computer by damaging programs, deleting files, or reformatting the hard drive. Others simply replicate themselves or flood a network with traffic, making it impossible to perform any internet activity.

Is iloveyou a virus or worm?

ILOVEYOU, sometimes referred to as Love Bug or Love Letter for you, is a computer worm that infected over ten million Windows personal computers on and after 4 May 2000 when it started spreading as an email message with the subject line “ILOVEYOU” and the attachment “LOVE-LETTER-FOR-YOU.txt.vbs”.

What computer virus Cannot do?

A computer virus, much like a flu virus, is designed to spread from host to host and has the ability to replicate itself. Similarly, in the same way that viruses cannot reproduce without a host cell, computer viruses cannot reproduce and spread without programming such as a file or document.

Are there good computer viruses?

The general consensus is that there are no good viruses. By definition, viruses do not have to do something bad. An early (and current) virus researcher, Fred Cohen, has argued that good computer viruses are a serious possibility.

What is classification of computer virus?

Computer Viruses are classified according to their nature of infection and behavior. Different types of computer virus classification are given below. Boot Sector Virus: A Boot Sector Virus infects the first sector of the hard drive, where the Master Boot Record (MBR) is stored.

What is the most dangerous computer virus?

10 Deadliest Computer Viruses of All TimeILOVEYOU. ILOVEYOU is considered one of the most virulent computer virus ever created. … Code Red. Code Red first surfaced on 2001 and was discovered by two eEye Digital Security employees. … Melissa. Named after an exotic dancer from Florida, it was created by David L. … Sasser. … Zeus. … Conficker. … Stuxnet. … Mydoom.More items…•

What are the 3 types of computer viruses?

The Three Major Types of Computer VirusesMacro viruses – These are the largest of the three virus types. They use built-in programming scripts in such applications as Microsoft Excel and Microsoft Word to automate the tasks. … Boot record infectors – These viruses are known also as boot viruses or system viruses. … File infectors – These viruses target .

How dangerous is a computer virus?

A computer virus can damage your computer, corrupt your files, or even steal your personal information! Virus come in all shapes and sizes. They are extremely tricky, and will try anything to find their way onto your computer. Some common types of viruses include: trojans, key loggers, spy-ware, and ransom ware.

Who is the creator of I Love You virus?

Onel De GuzmanThe Filipino creator of the “I Love You” virus, sometimes known as “Love Bug,” says he only did it so he could steal passwords and access the internet for free. A BBC writer named Geoff White tracked down Onel De Guzman in Manila.

Where is the creator of I Love You virus now?

Creator of the ‘Love Bug’, one of the world’s first global computer viruses that affected 45 million, now works in a phone repair shop in the Philippines and says he regrets unleashing the malignant files in 2000. The creator of one of the world’s first global computer viruses says he regrets his creation.

What type of virus is the I Love You virus?

ILOVEYOU virusThe ILOVEYOU virus is a computer virus (or) worm. It’s spread through an email with a subject line that said “I love you” in 2000.