A time bomb virus can be triggered on a certain date. All viruses cause serious destruction of computer data. … An encryption virus replicates itself onto a hard drive’s master boot record.
What is a virus that is triggered on a certain date?
This technique can be used by a virus or worm to gain momentum and spread before being noticed. Some viruses attack their host systems on specific dates, such as Friday the 13th or April Fools’ Day. Trojans and other computer viruses that activate on certain dates are often called time bombs.
Which of the following classification of virus can change its own code to avoid detection?
A polymorphic malware, is malware that constantly changes its identifiable features in order to avoid detection. This can be changing its code, changing the filenames it creates, changing the size of the malware etc.
Are there are no antivirus programs for mobile devices?
In most cases, Android smartphones and tablets do not need installing the antivirus. However, it is equally valid that Android viruses exist and the antivirus with useful features can add an extra layer of security.
What triggers a logic bomb?
A logic bomb is a malicious program that is triggered when a logical condition is met, such as after a number of transactions have been processed, or on a specific date (also called a time bomb). Malware such as worms often contain logic bombs, behaving in one manner, then changing tactics on a specific date and time.
How does virus worms and logic bomb differs from each other in terms of impact or damage?
A computer worm spreads like a virus but is an independent program rather than hidden inside another program. A logic bomb is a program normally hidden deep in the main computer and set to activate at some point in the future, destroying data.
What is a logic bomb virus?
A Logic Bomb is a piece of often-malicious code that is intentionally inserted into software. … This makes their presence undetected until it executes their function, which can range from inflicting harm through files deletion to self-propagation to the unusual, in the case of a 2019 attack by a software vendor.
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 virus was the famous Michelangelo virus?
The Michelangelo virus is a computer virus first discovered on 4 February 1991 in Australia. The virus was designed to infect DOS systems, but did not engage the operating system or make any OS calls. … Michelangelo (computer virus)
|Type||Boot sector computer virus|
Which of the following virus can change its own code?
A metamorphic virus is one that can transform based on the ability to translate, edit and rewrite its own code. It is considered the most infectious computer virus, and it can do serious damage to a system if it isn’t detected quickly.
What is the portion of virus code that is unique?
A virus signature is a portion of virus code that is unique to a particular computer virus.
Which of the following is not a computer virus?
Which of the following is not a type of virus? Explanation: Types of viruses are System or Boot Sector Virus, Direct Action Virus, Resident Virus, Multipartite Virus, Polymorphic Virus, Overwrite Virus, Space-filler Virus, File infectors, Macro Virus, Rootkit virus. Trojan does not come under types of virus. 3.
Is McAfee safe?
Is McAfee’s Antivirus Software Safe? McAfee’s antivirus software is safe, with no negative impact on system speed or performance. … Security Scan Plus (free), which identifies antivirus, privacy, and connection vulnerabilities. WebAdvisor (free), which protects your web browsing from malware and phishing attempts.
Does iPhones have antivirus?
Why are there no antivirus apps in the App Store? Apple built iOS – the software which runs on iPhones and iPads – to be as secure as it can be. … That’s the reason why you won’t find any antivirus apps to install: Apple says they’re unnecessary. Apple claims that Android has 47 times more malware than iOS does.
Can an Android phone get a virus?
Viruses on Android phones Android phones are at greater risk of being infected with malware, mainly because Google allows Android users more freedom than Apple gives to iOS users. As we’ve mentioned, Google allows Android users to download apps from outside the official app store, which can open the door to malware.
What does Time Bomb mean?
1 : a bomb so made as to explode at a predetermined time. 2 : something with a potentially dangerous or detrimental delayed reaction. Synonyms Example Sentences Learn More About time bomb.
What is the most common type of activity that activates the virus?
The Web is by far the most common vector for malware infection, Perry said. The most universal thing of all that’s involved in cyber bad guy activity is the Web. Users don’t even have to click anything on websites to infect their computers.
When a logic bomb is activated by a time related event it is known as?
When a logic bomb is activated by a time-related event, it is known as a: Time-related bomb sequence.
How do logic bombs and worms work?
How do logic bombs and worms work? Logic bombs execute when a certain set of conditions is met and are spread when infected files are passed from user to user, whereas worms run independently of host file execution and are much more active in spreading themselves.
What is the difference between virus and logic bomb?
A computer worm spreads like a virus but is an independent program rather than hidden inside another program. A logic bomb is a program normally hidden deep in the main computer and set to activate at some point in the future, destroying data. … Some viruses are high-tech pranks not intended to cause damage.
Which of the following describes a logic bomb?
Which of the following describes a logic bomb? A program that performs a malicious activity at a specific time or after a triggering event. A logic bomb is a program that performs a malicious activity at a specific time or after a triggering event. Logic bombs can be planted by a virus, a Trojan horse, or an intruder.
What is a time bomb on a computer?
In computer software, a time bomb is part of a computer program that has been written so that it will start or stop functioning after a predetermined date or time is reached.
What are the characteristics of logic bomb virus?
What are the characteristics of a logic bomb virus?
- It lies dormant for a specific amount of time. Like a ticking time bomb, logic bombs aren’t meant to go off right away. …
- Its payload is unknown until it triggers. …
- It’s triggered by a certain condition.
What is trap door virus?
A trap door is kind of a secret entry point into a program that allows anyone gain access to any system without going through the usual security access procedures. … Programmers use Trap door legally to debug and test programs. Trap doors turns to threats when any dishonest programmers to gain illegal access.
What is armored virus?
An armored virus is a computer virus that contains a variety of mechanisms specifically coded to make its detection and decryption very difficult.
What is space filler virus?
CIH, also known as Chernobyl or Spacefiller, is a Microsoft Windows 9x computer virus which first emerged in 1998. Its payload is highly destructive to vulnerable systems, overwriting critical information on infected system drives, and in some cases destroying the system BIOS.
What is Sandbox in security?
In cybersecurity, a sandbox is an isolated environment on a network that mimics end-user operating environments. Sandboxes are used to safely execute suspicious code without risking harm to the host device or network.
WHO released the first PC virus?
The first IBM PC virus in the wild was a boot sector virus dubbed (c)Brain, created in 1986 by Amjad Farooq Alvi and Basit Farooq Alvi in Lahore, Pakistan, reportedly to deter unauthorized copying of the software they had written.
What was the first email virus?
The Melissa virus was a macro virus that began to spread on March 26th, 1999. It was the first virus that used electronic mail to spread on a large scale, and in a short time it became – at that period – the fastest spreading virus of all time.
Who discovered virus first in computer?
As noted by Discovery, the Creeper program, often regarded as the first virus, was created in 1971 by Bob Thomas of BBN.
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