- File-infecting Virus. A virus that attached itself to an executable program. …
- Macro Virus. This type of virus is commonly found in programs such as Microsoft Word or Excel. …
- Browser Hijacker. …
- Web Scripting Virus. …
- Boot Sector Virus. …
- Polymorphic Virus. …
- Resident Virus. …
- Multipartite Virus.
What are the 3 types of computer 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 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 is the types of computer virus?
- Multipartite Virus. This virus infects the entire system – multipartite viruses spread by performing unauthorized actions on your operating system, folders, and programs.
- Direct Action. …
- Browser Hijacker. …
- Overwrite Virus. …
- Web Scripting Virus. …
- File Infector. …
- Network Virus. …
- Boot Sector Virus.
What is Computer Virus and examples?
Examples of computer viruses
Trojans
– As in the myth, a Trojan is a virus that hides within a legitimate-seeming program to spread itself across networks or devices. Ransomware – Ransomware is a type of malware that encrypts a user’s files and demands a ransom for its return.
What are the six types of computer viruses?
- Virus. 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 is the 3 virus?
Parainfluenza virus type 3
is one of a group of common viruses known as human parainfluenza viruses (HPIV) that cause a variety of respiratory illnesses. Symptoms usually develop between 2 and 7 days from the time of exposure and typically resolve in 7-10 days.
What are the two main types of computer virus?
- File-infecting Virus. A virus that attached itself to an executable program. …
- Macro Virus. This type of virus is commonly found in programs such as Microsoft Word or Excel. …
- Browser Hijacker. …
- Web Scripting Virus. …
- Boot Sector Virus. …
- Polymorphic Virus. …
- Resident Virus. …
- Multipartite Virus.
Is Trojan horse A virus?
A Trojan horse is
a type of malware that downloads onto a computer disguised as
a legitimate program. … However, unlike computer viruses or worms, a Trojan does not self-replicate, so it needs to be installed by a valid user.
What is the most common virus on computers?
- CryptoLocker. When it comes to malware, ransomware is the new kid on the block. …
- ILOVEYOU. …
- MyDoom. …
- Storm Worm. …
- Anna Kournikova. …
- Slammer. …
- Stuxnet.
What is first computer virus?
The Brain Boot Sector Virus
Brain
, the first PC virus, began infecting 5.2′′ floppy disks in 1986. As Securelist reports, it was the work of two brothers, Basit and Amjad Farooq Alvi, who ran a computer store in Pakistan.
What is polymorphic virus?
Polymorphic viruses are
complex file infectors that can create modified versions of itself
to avoid detection yet retain the same basic routines after every infection. To vary their physical file makeup during each infection, polymorphic viruses encrypt their codes and use different encryption keys every time.
What are some famous computer viruses?
- 10 worst computer viruses in history. …
- Mydoom – $38 billion. …
- Sobig – $30 billion. …
- Klez – $19.8 billion. …
- ILOVEYOU – $15 billion. …
- WannaCry – $4 billion. …
- Zeus – $3 billion. …
- Code Red – $2.4 billion.
What causes computer viruses?
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.
Who named computer virus?
The term computer virus, coined by
Fred Cohen
in 1985, is a misnomer.
What is virus malware in computer?
Malware, short for
malicious software
, is a blanket term for viruses, worms, trojans and other harmful computer programs hackers use to wreak destruction and gain access to sensitive information.
