Protecting Your PC or Laptop
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Just a short presentation I put together on how you can protect your PC or laptop from viruses, malware, spyware and other malicious activity.
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Your computer running more slowly than normal is a sign it may have a virus. Viruses can infect computers by opening emails from unknown people or clicking links in them, plugging in external drives from others, or downloading files from unfamiliar sites without a firewall. Spyware secretly steals users' information and sends it to others, and can infect computers through unfamiliar download sites or not installing Windows Updates. Mozilla Firefox provides the best protection against spyware and viruses compared to other browsers like Internet Explorer.
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Computer viruses are programs designed to spread from computer to computer and cause harm. Common signs of a virus include slowed performance, freezing, crashing, and error messages. Viruses spread through email attachments, pirated software, USB drives, and infected boot sectors or documents. The first virus was created in 1982 by a 15-year-old student named Rich Skrenta. While anti-virus software helps, it is not enough on its own - users must also practice safe browsing habits and keep systems updated.
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Computer viruses are malicious software programs that spread from one computer to another without permission. They can corrupt or delete files, use email to spread, and even erase entire hard drives. Viruses are often spread through email attachments, downloads, and infected removable media. It's important to have updated antivirus software, practice safe email/web habits, and only run as a standard user to help prevent virus infections. Common types of viruses include overwrite viruses that delete file contents, boot viruses that infect startup sectors, and worms that self-replicate and are difficult to remove. Infected computers may run slowly, have missing or corrupted files, experience errors, or have other abnormal behaviors. The first steps when detecting a possible virus are to install
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A computer virus is a program that can infect a system and quickly duplicate itself throughout the system. There are different types of computer viruses like boot viruses, file viruses, and macros viruses. Computer viruses can be gotten by using infected CDs or drives, opening infected email attachments, or downloading infected programs from the internet or other sources. Viruses can destroy the operating system, delete valuable data, decrease computer speed, and block computer memory. People should use anti-virus software, update it frequently, and avoid opening suspicious files or emails to prevent virus infections.
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This document provides an overview of the internet, its history, advantages, disadvantages, and requirements. It discusses how the internet began as ARPANET, a network developed by the US Department of Defense. It describes how the internet allows people to access information from any device anywhere and share emails and files. However, it notes that not all online information is accurate and personal information could be misused. The document also outlines the components needed like a computer, modem, and ISP to connect to the internet along with definitions of search engines, web browsers, and viruses. It emphasizes installing antivirus software and updating it to protect computers from viruses.
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* The Danger caused by a malware
* Common Types of malware
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Computer viruses are programs designed to spread from computer to computer and cause harm. Common signs of a virus include slowed performance, freezing, crashing, and error messages. Viruses spread through email attachments, pirated software, USB drives, and infected boot sectors or documents. The first virus was created in 1982 by a 15-year-old student named Rich Skrenta. While anti-virus software helps, it is not enough on its own - users must also practice safe browsing habits and keep systems updated.
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Computer viruses are malicious software programs that spread from one computer to another without permission. They can corrupt or delete files, use email to spread, and even erase entire hard drives. Viruses are often spread through email attachments, downloads, and infected removable media. It's important to have updated antivirus software, practice safe email/web habits, and only run as a standard user to help prevent virus infections. Common types of viruses include overwrite viruses that delete file contents, boot viruses that infect startup sectors, and worms that self-replicate and are difficult to remove. Infected computers may run slowly, have missing or corrupted files, experience errors, or have other abnormal behaviors. The first steps when detecting a possible virus are to install
Computer virus
A computer virus is a program that can infect a system and quickly duplicate itself throughout the system. There are different types of computer viruses like boot viruses, file viruses, and macros viruses. Computer viruses can be gotten by using infected CDs or drives, opening infected email attachments, or downloading infected programs from the internet or other sources. Viruses can destroy the operating system, delete valuable data, decrease computer speed, and block computer memory. People should use anti-virus software, update it frequently, and avoid opening suspicious files or emails to prevent virus infections.
Internet surfing and security
This document provides an overview of the internet, its history, advantages, disadvantages, and requirements. It discusses how the internet began as ARPANET, a network developed by the US Department of Defense. It describes how the internet allows people to access information from any device anywhere and share emails and files. However, it notes that not all online information is accurate and personal information could be misused. The document also outlines the components needed like a computer, modem, and ISP to connect to the internet along with definitions of search engines, web browsers, and viruses. It emphasizes installing antivirus software and updating it to protect computers from viruses.
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This Lesson Includes:
* Factors to consider in using a computer, the internet, and an e-mail
* Personal safety while working with a computer
* Using the internet (E-mail, Social Media, and Browsing) Safely
* The Danger caused by a malware
* Common Types of malware
* Malware symptoms
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A dozen dangerous myths about computer viruses
Modern computer viruses have changed significantly from previous years and pose greater threats than commonly believed. Viruses are now often created to steal money and personal information rather than just for vandalism. They can hide their presence on an infected computer and spread through many methods beyond just email attachments. Regular software updates and vigilance are needed to protect against the risks of virus infection through various avenues like email, websites, and network connections.
Computer Malware
Malware refers to unwanted software that can damage computers, including viruses, trojans, worms, spyware, and more. Viruses attach to files and programs to spread without permission and can damage systems. Trojans also spread unwittingly but allow hackers to access and control infected devices. Worms multiply to use up memory and resources. Spyware collects personal information without consent. Users can protect against malware through antivirus software, firewalls, safe computing habits like avoiding suspicious downloads and emails, and using strong passwords.
You Got To Protect Your Computer
Removable media like CDs and USB drives that have been used on infected systems can spread viruses to other computers. It is important to have reliable antivirus software to protect your computer. Free antivirus programs available online can help prevent diseases from infecting your system before damage occurs. When surfing the internet, most computers become infected within 20 minutes without protection. To avoid viruses, only download files from trustworthy sources and use antivirus software to scan for infections regularly.
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This document discusses various topics relating to computer and internet security. It defines common cyber threats like viruses, malware, spyware and provides tips on using antivirus software, firewalls, and strong passwords to enhance security. Specific myths about internet safety are debunked, such as thinking certain browsers are more secure or that only downloads can infect a device. Overall, the document stresses the importance of maintaining updated software, using caution online, and employing security measures like unique, complex passwords to help protect devices and information.
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Computer viruses are small programs that spread from one computer to another and interfere with operations. They are deliberately created by programmers or virus creation software. Viruses enter computers through email attachments, downloads, or infected files on removable drives. Symptoms of viruses include programs taking longer to load, changing file sizes or drive lights flashing unexpectedly. Common types are Trojan horses, worms, and boot sector viruses. Users can avoid viruses by only opening trusted email attachments, backing up files, and using updated antivirus software.
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A computer virus is a program that can copy itself and spread from one computer to another, often through email attachments, downloads from untrusted websites, or pirated software. The most common way viruses enter computers is via the internet by opening email attachments, downloading files, or visiting infected websites, as viruses can hide in files and spread before being detected.
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Malware refers to malicious software such as viruses, worms, trojans, spyware, and rootkits that are designed to disrupt computer operations, gather sensitive information, or gain unauthorized access to private computer systems. Common forms of malware transmission are through email attachments and websites. Malware detection methods used by antivirus software include signature-based detection by comparing files to known malware signatures as well as heuristic analysis to identify new or variant malware.
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A dozen dangerous myths about computer viruses
Modern computer viruses have changed significantly from previous years and pose greater threats than commonly believed. Viruses are now often created to steal money and personal information rather than just for vandalism. They can hide their presence on an infected computer and spread through many methods beyond just email attachments. Regular software updates and vigilance are needed to protect against the risks of virus infection through various avenues like email, websites, and network connections.
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Malware refers to unwanted software that can damage computers, including viruses, trojans, worms, spyware, and more. Viruses attach to files and programs to spread without permission and can damage systems. Trojans also spread unwittingly but allow hackers to access and control infected devices. Worms multiply to use up memory and resources. Spyware collects personal information without consent. Users can protect against malware through antivirus software, firewalls, safe computing habits like avoiding suspicious downloads and emails, and using strong passwords.
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Removable media like CDs and USB drives that have been used on infected systems can spread viruses to other computers. It is important to have reliable antivirus software to protect your computer. Free antivirus programs available online can help prevent diseases from infecting your system before damage occurs. When surfing the internet, most computers become infected within 20 minutes without protection. To avoid viruses, only download files from trustworthy sources and use antivirus software to scan for infections regularly.
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This document discusses various topics relating to computer and internet security. It defines common cyber threats like viruses, malware, spyware and provides tips on using antivirus software, firewalls, and strong passwords to enhance security. Specific myths about internet safety are debunked, such as thinking certain browsers are more secure or that only downloads can infect a device. Overall, the document stresses the importance of maintaining updated software, using caution online, and employing security measures like unique, complex passwords to help protect devices and information.
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Computer viruses are small programs that spread from one computer to another and interfere with operations. They are deliberately created by programmers or virus creation software. Viruses enter computers through email attachments, downloads, or infected files on removable drives. Symptoms of viruses include programs taking longer to load, changing file sizes or drive lights flashing unexpectedly. Common types are Trojan horses, worms, and boot sector viruses. Users can avoid viruses by only opening trusted email attachments, backing up files, and using updated antivirus software.
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This document provides information about computer viruses, malware, hacking, and cybersecurity topics. It defines a computer virus as a program that can copy itself and infect computers without permission. It describes different types of viruses like worms, Trojan horses, and macro viruses. It also outlines signs of infection, functions of antivirus software, and basic cybersecurity concepts like firewalls, hacking, copyright, plagiarism, netiquette, phishing, and cyber laws.
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The document discusses different types of cyber threats including phishing, malware, viruses, and spam. Phishing involves stealing personal information through deceptive emails or websites. Malware is malicious software that can be installed without the user's knowledge to disrupt computer functioning. Viruses duplicate themselves and hide to evade detection, taking up storage space and slowing computers. Spam is unwanted email that wastes network bandwidth but generally does not cause harm. Anti-virus software, firewalls, and spam filters are recommended to protect against these threats.
computer virus ppt.pptx
A computer virus is a malicious program that can replicate itself and spread from computer to computer without permission. It can slow down or damage infected systems. The first computer virus, called "Creeper," was created in 1971. Later viruses caused more harm by deleting files or collecting users' personal data. To avoid viruses, users should only download files from trusted sources, use antivirus software, keep systems updated, and be wary of email attachments from unknown senders. Other malware like spyware and Trojans also pose threats by monitoring users' activities or gaining control of infected devices without consent.
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This document discusses computer viruses and how to protect against them. It describes different types of viruses like file infectors and boot sector infectors. It also covers other malicious programs like Trojan horses and worms. The document outlines how viruses can spread through email attachments, shared files, disks, and infected documents. It provides tips for prevention, like installing and updating antivirus software, not opening unexpected email attachments, and being wary of virus warnings from untrusted sources.
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The document discusses different types of computer viruses and malicious programs such as worms and Trojan horses. It describes how viruses can spread through email attachments, shared files, floppy disks, and infected documents. The document provides tips for preventing viruses, such as installing and updating antivirus software, avoiding unexpected email attachments, and keeping operating systems and programs up to date. It also outlines signs that a computer may have a virus and explains what to do if a virus is suspected.
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The document discusses various topics related to technology and computer security including:
1. It defines technology abuse as the misuse of technology and lists examples of computer crimes like hacking.
2. Hackers are skilled computer users who break into other people's computers to steal information and data without permission, which is illegal.
3. The document discusses the need for computer security and lists measures like backing up data, access codes, and passwords to restrict unauthorized access.
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A computer virus is a program that can copy itself and spread from one computer to another, often through email attachments, downloads from untrusted websites, or pirated software. The most common way viruses enter computers is via the internet by opening email attachments, downloading files, or visiting infected websites, as viruses can hide in files and spread before being detected.
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The document discusses internet security threats such as viruses, worms, Trojan horses, spam, and phishing. It provides definitions and examples of each threat. It also offers best practices for protecting computers such as installing antivirus software, using firewalls, creating strong passwords, and backing up files regularly. The document concludes by emphasizing the importance of keeping computers updated and not sharing personal information online.
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Viruses and spyware are types of malicious software known as malware that can interfere with computer use, damage files or software, and steal personal information. Malware spreads through users clicking links or downloading files that contain viruses or spyware. Common symptoms of infection include homepage or toolbar changes without consent, frequent pop-up windows, computer slowdowns, and increased junk email. It is important to keep systems and software updated, use antivirus software, and avoid suspicious links or downloads to prevent malware infections.
Network Security
The document discusses network security and protection programs. It describes different types of malware like viruses, worms, Trojan horses, and spyware that can infiltrate computers. Viruses can enter via infected disks or the internet, while worms spread through email attachments. The document advises using up-to-date anti-virus software and avoiding opening attachments from strangers to protect against malware.
Kinds of Viruses
Viruses, worms, and Trojan horses are types of malicious software (malware) that can damage computers. Viruses spread by attaching to host programs and replicating, worms spread across networks without user action, and Trojans allow hackers remote access. Some examples provided include the CIH virus from 1998 that overwrites partition tables, the 2001 Code Red worm that allowed network hacking, and the 2012 Trojan.Flame malware that stole data. Basic safety tips to avoid malware include keeping systems updated, using antivirus software, avoiding unsafe files/links, and being wary of suspicious messages.
Jeremy Virus Effect
The document outlines several common effects that viruses can have on computers. These include filling the computer with useless files which takes up storage space, messing up files by making parts unlocatable, corrupting the file allocation table which tracks file locations, damaging the boot sector so the computer cannot start up, erasing the entire hard drive or diskette, directly resetting the computer, slowing down processing speed, corrupting files so they cannot be opened, redefining keyboard keys to trigger harmful actions, locking the keyboard entirely, and stealing private information for malicious purposes.
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A computer virus is a small program that spreads from one computer to another and interferes with computer operation. Viruses can spread through email attachments, downloads, files on removable media, and by exploiting security vulnerabilities. Common symptoms of a virus infection include slow performance, crashing, and unusual error messages. To protect against viruses, users should install and keep updated antivirus software, avoid opening suspicious email attachments or downloading files from untrusted sources, and make regular backups of their data.
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A computer virus is a program that can copy itself and infect a computer without permission by attaching itself to other programs. Viruses can damage data files, corrupt firmware, display unwanted messages, and cause computers to restart unexpectedly. Worms are similar but can spread autonomously between computers without needing to be part of another program. Both viruses and worms can severely slow down computer and network performance and access sensitive information. It is important to use antivirus software, avoid opening attachments from unknown senders, and not execute downloaded files before scanning them.
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This document provides information about computer viruses, how they spread, and their types. It explains that computer viruses are malicious programs that can replicate themselves and spread from one computer to another through email attachments, downloads, or infected files. Viruses can corrupt or delete files on a computer. The document outlines different types of viruses like overwrite viruses, boot viruses, and worms. It also lists some common symptoms of an infected computer like slow performance, missing files, error messages, and printing issues. It advises the reader to avoid opening unknown email attachments, get an antivirus program, and use online virus removal tools if infected.
Itc lec 15 Computer security risks
1. What is a computer security risk?
2. Virus
3. Trojan Horse
4. Worms
5. Stand-Alone Utility Programs
6. How can a virus spread through an e-mail message?
7. How does an antivirus program inoculate a program file
?
8. What is a firewall?
.
Computer virus
A computer virus is a type of malicious software or malware that can replicate itself and spread by inserting copies of its code into other computer programs or files. When executed, the virus code can damage programs, delete files, or disrupt the operation of the computer. Viruses spread similar to biological viruses by making copies of themselves that get transferred to other computers or storage devices. Common symptoms of a virus infection include programs running slowly, unexpected computer behavior, and files being deleted or corrupted.
Computer viruses by joy chakraborty
This document discusses information security and privacy issues related to computer viruses. It begins by providing background on viruses and their ability to cause damage and disruption. It then defines what a computer virus is and describes how they work, infecting other programs and replicating. The document outlines various ways viruses can be acquired and categories of viruses. It also discusses the lifecycle of viruses and measures that can be taken to prevent virus infections, including using antivirus software and firewalls. The document concludes by covering data security issues, common types of security breaches, and the costs to companies from virus damage.
Computer virus 2015
A computer virus is a small program that spreads from one computer to another and interferes with computer operation. Viruses can spread through email attachments, downloads, shared files, and more. Infected computers may experience slow performance, crashing, missing files, and unusual error messages. To protect computers, people should install antivirus software, update security programs, use firewalls and pop-up blockers, and backup important files. Antivirus programs detect and remove known viruses, while online scanning services can also help identify infected files.
Viruses and antiviruses
This document discusses viruses, antiviruses, and how to prevent virus attacks. It begins with definitions of viruses, malware, and spyware. It then covers virus languages, types of viruses like macro viruses, boot sector viruses, and worms. The document discusses symptoms of virus attacks and methods of prevention like using antivirus software and firewalls. It provides details on Windows Defender antivirus and how to enable secure logon, recognize dangerous file types, and determine when an email can be trusted. It concludes with information on removing shortcut viruses from files and drives.
Viruses
This presentation is prepare by Polite group from GCU Faisalabad.The members of polite group are Syed Mubashair Abid.Ch.Junaid Arshad.Ch.Uzair Zia.Hafiz Jawad Ahmed.
Computer Virus
A computer virus is a program that can spread across computers without the user's knowledge by copying itself. Viruses can harm computers by deleting files or displaying irritating messages. There are different types of viruses like boot sector viruses, file viruses, macro viruses, worms, and trojans. Email attachments are a common way viruses spread between computers. While visiting websites poses less risk than opening unknown files, malware like backdoor trojans accessed through websites can still infect computers.
Computer security.pptx
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Computer virus
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Computer Security 101
Malicious software like viruses, spyware, and Trojans can damage your computer and lead to identity theft. To detect malware, check for strange computer behavior like slow performance or unexpected file downloads. Use antivirus software to scan for and remove malware, and keep the software up to date to protect against new threats. Regularly applying operating system and software updates also helps prevent infections.
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As the internet becomes more integrated into everyday lives, we must learn to defend against new online attack types. Today's hackers commonly use multi-layered attacks like a worm in a chat message linking to an infected webpage. Worms uncover vulnerabilities and report them back to hackers, who then quickly assemble malware from pre-made components to exploit the vulnerability before most can download a fix. The document provides tips to protect against emerging sophisticated, multi-faceted threats, including using strong security software, enabling automatic updates, using caution with attachments and downloads, and being aware of current threats.
Virus project
This document provides information about computer viruses, including:
- What a computer virus is and how it spreads by infecting files and programs.
- The different types of viruses like direct action, resident, overwrite, and directory viruses.
- The differences between viruses, worms, and Trojan horses.
- Symptoms of an infected computer and what to do if suspecting a virus attack.
- Popular antivirus software options and factors to consider like update frequency and scanning capabilities.
- How antivirus software works to detect, remove, and quarantine viruses to prevent spreading.
- General precautions like scanning removable media and keeping software updated.
computer virus Report
This document provides an introduction and overview of computer viruses. It defines computer viruses and explains how they work, discussing how viruses actively infect systems and spread. It categorizes common types of computer viruses such as macro viruses, memory resident viruses, overwrite viruses, and more. Specific virus names are listed as examples for each category. The document also discusses how to protect systems from computer viruses and describes some problems caused by viruses.
Wikis 1 Assingment
Computer viruses are programs that can copy themselves and spread from one computer to another without permission. They can damage programs, delete files, or reformat hard disks. It is important for computer users to know about viruses in order to take steps to avoid infection, such as using antivirus software, maintaining updates, and avoiding opening email attachments from unknown senders.
Computer Virus
Computer viruses are programs that spread from one computer to another without permission. They can corrupt or delete files, use email to spread, or erase entire hard disks. Viruses are often spread through email attachments, downloads, or infected files on networks. While some only replicate, others can damage computers. It is important to have antivirus software and be cautious of suspicious files from untrusted sources. Different types of malware include viruses, worms, trojans, and bacteria, each with their own methods of spreading and behaviors.
Introduction to Computer Virus
This document discusses computer viruses, including what they are, how they spread, how to identify them, and how to prevent them. A computer virus is a type of malicious software that can replicate itself and spread from one computer to another. Viruses often perform harmful actions like deleting files or stealing data. They typically spread through email attachments, downloads, or removable drives. Signs of a virus include computers running slowly, applications not opening, and antivirus software disappearing. The document recommends installing antivirus software and avoiding suspicious websites or email attachments to prevent viruses. It also lists some well-known antivirus programs.
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Protecting Your PC or Laptop
- 1. Malware, Spam and Spyware
- 2. A computer virus is a malicious software program designed to do damage to your computer system by deleting files or even taking over your computer to launch attacks on other systems.
- 3. Many computer attacks today are executed using computers compromised by a computer virus.
- 4. You might see strange messages or graphics displayed on your computer screen or find that normally operated programs are acting erratically. You might notice that files have gone missing Your computer is sluggish or slow Computer might fail to start up
- 5. There are many ways you can share data and transmit a virus online 1. Opening an infected file attached to an email message 2. Launching an infected program file downloaded from the internet 3. Sharing a USB memory drive or data CD that contains an infected file
- 6. Whenever you open a file attached to an email or instant message, you stand a good chance of infecting your computer