- ILOVEYOU. The ILOVEYOU virus posed as a love confession. …
- Code Red. Code Red targeted Microsoft IIS users and even the White House website was hit. …
- Melissa. This virus started in 1999 as an infected word document. …
- Storm Trojan. …
- Sasser. …
- My Doom. …
- Zeus. …
- Conficker.
What type of viruses can damage your computer?
- Boot sector virus. This type of virus can take control when you start — or boot — your computer. …
- Web scripting virus. This type of virus exploits the code of web browsers and web pages. …
- Browser hijacker. …
- Resident virus. …
- Direct action virus. …
- Polymorphic virus. …
- File infector virus. …
- Multipartite virus.
Which virus is harmful for computer?
1.
Mydoom
– $38 billion. The worst computer virus outbreak in history, Mydoom caused estimated damage of $38 billion in 2004, but its inflation-adjusted cost is actually $52.2 billion. Also known as Novarg, this malware is technically a “worm,” spread by mass emailing.
Why virus is harmful for your computer?
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.
What is the first computer virus?
Following Creeper, which was isolated within the realm of researchers,
Elk Cloner
was the first virus to be detected in the wild. Written in 1982 by a 15-year-old, it was a boot sector virus that infected Apple II computers.
Which is the powerful computer virus in the world?
The biggest computer virus ever is
the Mydoom virus
, which did an estimated $38 billion in damages in 2004. Other notables are the Sobig worm at $30 billion and the Klez worm at $19.8 billion.
Who made computer virus?
In January of 1986, the first virus written for Windows based PCs was born. Known simply as “Brain,” it was written by
two brothers, Basit and Amjad Farooq Alvi
, who were only 17 and 24 years old at the time.
What are the 5 types of viruses?
There are five different types of viruses:
Conjugate vaccines, inactivated vaccines, live, attenuated vaccines, subunit vaccines and toxoid vaccines
. There are several ways people can slow the spread of a virus in lieu of drugs or vaccination.
What are the 3 types of viruses?
- 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 .
What are effects of computer virus?
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.
What causes virus in computer?
Viruses
spread when the software or documents they get attached to are transferred from one computer to another using a network, a disk, file sharing methods, or through infected e-mail attachments
. Some viruses use different stealth strategies to avoid their detection from anti-virus software.
How can I clean my laptop from viruses?
- Step 1: Download and install a virus scanner. …
- Step 2: Disconnect from internet. …
- Step 3: Reboot your computer into safe mode. …
- Step 4: Delete any temporary files. …
- Step 5: Run a virus scan. …
- Step 6: Delete or quarantine the virus.
Who is father of computer virus?
Von Neumann’s
design for a self-reproducing computer program is considered the world’s first computer virus, and he is considered to be the theoretical “father” of computer virology.
Who made Creeper virus?
As 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.
What does the ILOVEYOU virus do?
The attachment in the ILOVEYOU virus is a VBScript program that recipients at the time mistook for a simple text file because the extension . vbs was hidden from view on Windows machines. When the file is opened, it
finds the recipient’s Outlook address book and re-sends the note to everyone in it
.
