What are computer worms | What are the signs of a computer worm?And how to remove them?
Hello friends, today we will talk about computer worms, what are computer worms (what are computer worms) , types of computer worms , how do they harm the computer? How do we recognize it, how do we remove it, and how do we avoid it? Today we are going to see all these topics, so let's start in detail, Computer Worms?
The term " computer worm " was first mentioned in the novel "TheShockwave Rider" by John Brunner in 1975. In the early days of computer science, worms were used to identify computer vulnerabilities. These earlier programs did not seriously damage computers, but rather used these worms to identify computer vulnerabilities by copying themselves.
But nowadays, the purpose of the computer worm has changed . Currently, cyber attacks have increased so much that most attackers use them to gain full access to the systems of computer users.Worms are also similar to computer viruses that do a lot of harm to our computers but these worms are completely free in themselves. It does not require any medium person to spread it to any other computer, rather it spreads to more and more computers across the network by making multiple copies on its own.
Computer worms are more dangerous for computer users and businesses, as they can delete important data files on their computers and slow down the computer's processing speed, causing computer programs to stop working.
What are computer worms?
A computer worm is a malicious program that itself spreads multiple copies to computers through a network connection. A computer worm usually does not infect computer files, but rather infects other computers on the network.
The difference between a computer worm and a virus is also that computer worms are stand-alone programs that create their own replicas and run in the background of the program, while viruses are designed to infect the host system of the computer. The file is required.
Computer worms are divided into a type of computer virus , but they have many different characteristics that separate computer worms from other computer viruses. Computer viruses spread to computers through human activities like running programs, opening files, opening infected email attachments, etc. while computer worms have the ability to spread to computers automatically without any human activity. It often spreads by sending large amounts of email to users' email contacts when infected emails are opened .
Computer worms can get into your system by installing Backdoors in weak security software on your computer and they can also steal sensitive information, and can also cause file corruption and other types of damage, so it is very important to keep your data safe from worms. Importance. Worms consume a large amount of memory as well as bandwidth. This degrades servers, user systems and networks due to overload.
How does a computer worm spread (How do worms work or spread)
Computer worms take advantage of hidden weaknesses in a computer network and operating system (OS) to enter a computer through a network that often goes unnoticed. Hackers often send emails or instant messages with malicious attachment files. These hackers or cybercriminals perform phishing so that the recipient is willing to open these malware files.
When a user accidentally opens the attachment or the cookie, the malware is immediately downloaded to the system automatically or directed to a malicious website. Worms, as soon as they reach the computer, begin to replicate themselves and look for a way to get into other systems.
,
Worms' number one job is to repeat themselves over and over again, wasting system resources like bandwidth, program files, or hard drive space. Hackers can also get into the computer by installing Backdoor with the help of worms, which can steal or delete your sensitive data
For many years before that, when people did not have much access to the Internet, worm malware relied on an actual means of penetrating the network. For example, hackers or cybercriminals have used CDs, DVDs, pen drives, floppy disks, or other media drives to hold their worm, and wait for the victim to place it in another computer, so that it can be misused. But today it is easy for cybercriminals to fall prey to malware through e
lectronic means such as email, instant messaging services and file sharing networks.
types of computer worms
If you are using a vulnerable or infected system to search for any information on the internet , Worm searches for those computers on the internet which can easily infect them. If such systems are found, they infect them. On systems without antivirus software installed, these worms easily affect this system. These worms also spread over the Internet or local area network connections.
Email worms
Worms spread mostly through email attachments. The emails contain infected links or attachments, which, once clicked, download and make a place in the system. These worms try to find email contacts of infected systems and send links so that they can also destroy the system.
Email attachments usually have double file extensions such as (.mp4, .exe, or .avi.exe), which makes the user think that these are media files and not malware that could make users click on them. An example of an Eorm email is the " ILOVEYOU " worm . Which was sent in 2000 in an e-mail with the line "I love you". It infected more than 10 million computers.
File sharing worms
When a file is downloaded from an unknown source, there may be a possibility of Worms in this file. These worms are saved in the computer under the name of such a folder, in which we have no doubt that the worm may be present in this folder. Peer-to-peer file-sharing and file-sharing networks are still performed by millions of people around the world, and while these file-sharing networks operate in the legal field at least, they are largely illegal..
This is why it is easy for hackers to create malware in large files. When you download these infected files, the worms copy themselves to your computer. In 2004, a worm called " Phatbot " infected many computers through file sharing .
instant messaging worms
These worms are similar to email worms. Only the way they spread it is different. This worm is spread by communication via a chat message (Whatsapp, Skype, etc.), where there is a link in the chat message, and when the link is opened, the system can be vulnerable to viruses. However, these worms are not as effective as other worms. Users can destroy these worms if they want to by deleting the message and changing the password. Often it's a short message like "LOL" or a graphic that causes the user to click, thinking it's something funny.
Some examples of computer worms
Morris worm
Morris Worms was launched in 1988 by Robert Morris . It has inadvertently generated some of these code which contains a lot of bugs, which can cause a lot of damage to this infected host machine. Thousands of overburdened computers were running Morris Worm Unix (UNIX), which cost between $10 million and $100 million in financial losses. For this, Robert Morris was convicted under the Computer Fraud and Abuse Act.
storm worm
This worm is a type of email worm, which appeared in 2007. In this, false news was spread in people's email. The "weather disaster" was reported to the email. In which he wrote that “hundreds of lives were lost in weather disaster across Europe,” so far more than 1.2 billion emails have been infected by the storm worm, which has been sent over 10 years.
SQL worm
The way the computer worm spread was completely different. It suddenly creates a series of IP addresses, copies them and sends them to the addresses of other computers, which were not protected by antivirus programs on the computer. In 2003, the SQL worm spread , more than 75,000 computers became infected with DDoS attacks, and many large websites. Apart from this, there were many Aldodat ILOVEYOU and MSBlast and Michelangelo 's most famous .
How to identify computer worms
Computer users should be aware of the symptoms of computer worms, so that the work of recognizing the infection and removing the computer worm can be started as quickly as possible from the system. Here are some of the main symptoms of computer worms:
- slows down computer performance
- Sudden unusual behavior in the computer (pictures, messages, sound, etc.)
- Computer firewall warning
- System freezes or crashes
- Automatic opening and running of programs
- The email was sent to others without the user's knowledge
- Strange and unknown files and icons for the desktop
- Automatically direct links to other sites in web browsers
- The file is missing or has been changed
- Frequent error messages in the operating system or system
How to remove computer worms
Several steps are taken to remove computer worms. First of all, before performing any procedure to remove the worm, it is necessary to disconnect the computer from the Internet and any connection to local area networks.
First of all, high-quality antivirus software must be installed in the computer system. Antivirus software should be from a good company. Because often fake antivirus software can also contain malware.
Thoroughly scan your system with antivirus software. So that malware can be detected and destroyed, whatever the malware.
If a computer worm or other malware is found while scanning the computer, the antivirus usually automatically deletes it from the system.
If your antivirus is unable to remove worms automatically, consult an expert or check online to remove worms from the same computer.
Your computer's operating system software must be up-to-date and all software must have current patches installed.
The antivirus must be run again after removing the worms from the system. This is to restore the system.
How to protect the system from worms
Safe behavior
The user should only open an attached file or link if it came from a trusted source. Email sent by an unknown sender should not be opened, because many worms spread through email.
Regular updates
Your operating system and other software must remain up-to-date with regular updates. Updates from software makers often contain security patches that protect your computer from new worms and fix system errors.
Antivirus software
It must have anti - virus software already installed to protect your computer from mobile viruses. It is a program that keeps your computer safe from worms, viruses, trojans and other types of malware. It scans all files in the computer and prevents corruption.
Firewall
A firewall is a security tool used to monitor incoming and outgoing network traffic according to security rules. It blocks activity between internal and external networks to protect them from cyber attacks.
Email box protection
Computer worms often attack computers via email. For example, emails enter the computer through phishing . Therefore, emails that you don't know and emails contain unknown message links and attachment files, so they should be ignored from opening.
encryption files
File encryption technology protects sensitive data saved in a computer, server, or other device, because it contains your data in the form of encryption. This prevents the worm from damaging these files.
conclusion:
Yes friends, I hope you liked this blog. In this blog we have seen, what is the computer worm (what is the computer) worm , how many types of worms found, and how to identify them and remove them etc. so . By the way, cybercrime has increased so much nowadays that people become victims of it when there is a small mistake on the Internet. So keep your system data as safe as possible.
Under this you have shared important information about computer worm. I hope you got answers to your questions by reading this blog ( What is a Computer Worm ). If you still have any advice/suggestion related to this, definitely let us know by commenting. We will definitely try to make it happen. If you found this post helpful, please share this post with your friends and on social media, thank you!
No comments:
Post a Comment