COMPUTER SYSTEMS SERVICING ANTI VIRUS SYSTEM
- 2. Table of Content 1. Antivirus Software 2. Functions of an Antivirus software 3. The process of anti virus soft ware 4.The need for antivirus software 5. Working of antivirus software 4.1 Signature-based or virus dictionary detection 4.2 Heuristic-based detection 4.3 Behaviour-based detection 4.4 Sand box detection 4.5 Data mining 4.6 Types of scan 5. Advantages of antivirus software 6. Example of antivirus software TABLE OF CONTENT
- 3. ANTI VIRUS – a security program design to prevent, scan, detect, search and remove viruses and other types of malware from a computers, networks and other devices.
- 4. What is the function of an Anti virus? -Antivirus software keeps running as a background process. Furthermore, it keeps scanning the device or and servers for any malware threat. It performs the functions as follows; What is the function of an Anti viruses?
- 5. Scan the specific files and directories for malware patterns which can indicate any malware. Allows the users to schedule scans according to them. Moreover, it then performs the scan at the scheduled time. Users can also scan the system anytime they want. If it detects any malicious software it removes it form the system. Furthermore, some software does this it self in the background. On the other hand, some software asks permission it inform the user before removing them. Thus, it makes sure that the system is always safe for work.
- 6. The process of antivirus software: -Anti software is like fire extinguishers: You know you need one, but you hope you never have to use it. With all the emerging computer viruses, however, its important to know how to buy, set up, install and use antivirus software. That’s exactly what you’ll learn in this guide. We’ve created step by step instructions on how to setup and use antivirus software. As a bonus, well explain terms you’ll encounter when shopping for antivirus software, like Trojan, ransom ware, adware, and many more.
- 7. The need for antivirus software - We need antivirus software to protect us from different malware and viruses. Let us study different malware. The need of antivirus soft ware
- 8. Malware; It stands for ‘malicious software’. It is a category that includes software like viruses, Trojan horse, spyware, etc. furthermore, this software perform unwanted activities and changes in your system. Moreover, they can delete files, slow down, or even crash your system.
- 9. Spyware: It is software that hides in the operating system and makes unwanted changes. It can even spy on your online activities.
- 10. Ransom ware: It is malicious software that display messages regarding the deposition of money. Moreover, this software tries to charger money from the user by creating alerts about continuing system use.
- 11. Viruses: These are unwanted software that enters the system and make unwanted changes without the permission of the user.
- 12. Worms: they are a type of virus that creates multiple copies of itself.
- 13. Trojan horse: It is also a type of virus that pretends to be a harmless file but, it is actually a virus that spreads on the system when the user downloads it.
- 14. Adware: These are advertisement supporting software that displays numerous unwanted advertisements. Move over, it can also make changes to the browser.
- 16. Working of antivirus software - If virus enters a system it affects the working by making changes in the files and directories. Moreover, it can also slow down the working of the system and also slow down the working of the system and also delete important files. Whenever the antivirus detects any malware syntax or any such activities, it tries to remove these files. Moreover, it alerts the user about the virus too. The several ways of detecting the viruses are as follows;
- 17. Signature - Based or Virus Dictionary Detection Is the best way to detect past viruses without any false information. But, it is not able to detect new viruses. Or in other words, it can detect new viruses if the definition file of the virus is present in the antivirus software.
- 18. Heuristic based detection This is one of the most common techniques of virus detection. In this techniques, the antivirus uses an algorithm. Furthermore, this algorithm compares the signature of some known viruses to the suspected threat. Besides, detecting past viruses it can also detect new viruses. Moreover, it can also detect past viruses that have been modified or disguised.
- 19. Behaviour Based Detection If a virus becomes successful in hiding from the above detection techniques. In that case, an antivirus checks the behaviour of the programs. If it detects any strange or unwanted activities it warns the user. There can be several such activities such as: • Remote connections to computers. • Deleting or modifying files themselves. Moreover, if changes in files are occurring in a large number. • Or changing various other settings of the system.
- 20. Sand box detection In this technique, if there is any suspicious program, it is run in an artificial virtual environment. Furthermore, this environment is created by the antivirus to trick the malware software. It is not the real system environment. Then, the software runs in this environment and its activities are recorded. If in case, the antivirus finds any harm or unwanted activity it warns the user. Otherwise, it allows the software to run in the real environment. This method is heavy and show. Therefore, it is not used in normal antivirus software. But, the antivirus for corporate and network systems uses this technique.
- 21. Data mining It is a recent technique in the field of viruses and malware detection. Moreover, it work on viruses that are new and more recent. In this technique, data mining and machine learning algorithms are used to viruses in files.
- 22. Types of Scan - Besides, the detection techniques the scanning also plays an important role. There are several ways of scanning the system for threats. They are as follows:
- 23. On-demand Scan: as the name suggest, this scan occurs when the user itself wants to scan the system for malware. Or in the other case, if the user schedules the scan to occur at the specified time. It searches the content of disk, directories, files, boot sectors, and system components.
- 24. Real-Time Protection: This is a type of automatic protection that keeps running in the background. Due to this, the antivirus catches the malware before it does any damage. Hence, we can also call them a Background guard. It scans the system when any new program or device is freshly loaded in the memory. For example, inserting a new USB.
- 25. Smart Scans: in this, the software scans for files that are more suspicious of catching the malware. Therefore, this method saves time and resources.
- 26. Advantages of Antivirus software The advantages of antivirus software are as follows: • It detects, blocks, and removes viruses and malware from system. • It warm about dangerous websites, attachments, links, advertisements, etc. • Prevent identity threats. • Blocking phishing.
- 27. • Keeps the online activities and accounts protected. • Protects the system from getting slow or corrupted. • Protects the data and files from deleting. • Therefore, helps to run the computer system smoothly.
- 28. Examples of antivirus software • Microsoft defender • Norton 360 • Bit defender antivirus • Malware bytes • McAfee total protection • ESET NOD32 antivirus and so on.
- 30. TEST I MULTIPLE CHOICES; 1. WHAT SOFTWARE SCANS FOR FILES THAT ARE MORE SUSPICIOUS OF CATCHING THE MALWARE? a. SMART SCANS b. ON-DEMAND SCANS c. REAL-TIME PROTECTION d. DATA MINING 2. THIS IS A TYPE OF AUTOMATIC PROTECTION THAT KEEPS RUNNING IN THE BACKGROUND? e. ON-DEMAND SCANS f. REAL-TIME PROTECTION g. SMART SCANS h. DATA MINING
- 31. 3. IT STANDS FOR ‘MALICIOUS SOFTWARE’? a. Malware b.Spyware c. Ransom ware d.Worms 4. THESE ARE UNWANTED EMAILS? e. Trojan horse f. Adware g.Spam h.Viruses
- 32. 5. THIS IS ONE OF THE MOST COMMON TECHNIQUES OF VIRUS DETECTION a. Signature based detection b.Heuristic based detection c. Behaviour based detection 6. IT IS A RECENT TECHNIQUE IN THE FIELD OF VIRUSES AND MALWARE DETECTION. d. Data mining e. Malware f. Trojan horse g.Spyware
- 33. TEST II ENUMERATION 7. GIVE THE 3 TYPES OF SCAN? 8. IT IS A PROGRAM THAT REMOVE VIRUSES AND OTHER TYPES OF MALWARE FROM A COMPUTERS, NETWORKS AND OTHER DEVICES? 9-12. GIVE ME 4 DIFFENT TYPES OF MALWARE? 13. GIVE ME 3 EXAMPLE OF ANTIVIRUS SOFTWARE? 14. THIS VIRUS CAN CREATES MULTIPLE COPIES OF ITSELF. 15. WHAT IS THE FULL NAME OF SIR DARL?