hey... This PPT is about Computer Virus and its prevention Technique 1. What is computer virus 2. Types of computer virus 3. How to prevent computer from Virus 4. Antivirus 5. Types of antivirus This ppt is useful for B.Ed course / MCA/BCA/ BBA/BCOM/MCOM/M.Ed etc.

1. Computer virus & Its Prevention
By- Pragati Kachhi(Assistant Professor
at Baba Saheb Ambedkar University
under department KMRO )
UGC-NET Qualified
CTET Qualified
AWES Qualified
MP-TET Qualified
Content :-
1. Computer virus
2. Types of virus
3. How to prevent computer from virus
4. Antivirus & types

2. A computer virus is a type of computer program that, when
executed, replicates itself by modifying other computer
programs and inserting its own code.
If this replication succeeds, the affected areas are then said
to be "infected" with a computer virus, a metaphor derived
from biological viruses.
A computer virus is a type of malicious software, or
malware, that spreads between computers and
causes damage to data and software. Computer viruses
aim to disrupt systems, cause major operational issues,
and result in data loss and leakage.
What is computer virus :-

3. Symptoms
1. The hard disk run out it space .
2. The computer does not boot.
3. Computer system becomes slow.
4. Display unwanted massage.
Prevention:-
1. Do not share drive C without password and without read only restriction.
2. Use antivirus & delete all email attachment.
3. Have multiple backup of files
4. Use more secure operating system ex. Unix /Linux .

4. How Does Virus Affect?
•By downloading files from the Internet.
•During the removable of media or drives.
•Through pen drive.
•Through e-mail attachments.
•Through unpatched software & services.
•Through unprotected or poor administrator
passwords.
5 Common Ways of Getting a Computer Virus
•Opening Links in Emails from Unknown Senders. This is
probably the most effective way of disseminating malware.
...
•Downloading Malware from Untrustworthy Sites. ...
•Clicking Online Ads. ...
•Social Media Scams. ...
•Software that Hasn't Been Patched Properly.

5. Types of Virus:-
 Worms
This is a computerprogram that replicates itself at a swift pace.
Unlikea computer virus, it is self-contained and hencedoes not need to be part of another program to propagate itself.
 Trojan Horse
A TrojanHorse is also a sort of destructive program that remains disguised ina normalsoftware program.
It is not exactly a virus, as it cannotreplicate itself. However, thereis possibility that virus program may remainconcealed in theTrojan Horse.
 Bombs
Itis similar to Trojan Horse, but Logic bombs havesome specialty; these include a timing device andhenceit will go off only at a particular date and time.
 Browser Hijacker
Easily detected, this virus type infects your browser and redirects you to malicious websites.
 . Web Scripting Virus
This sneaky virus disguises itself in the coding of links, ads, images, videos, and site code. It can infect systems
when users download malicious files or visit malicious websites.

7. What is malware?
Malware is an umbrella term for any piece of software that has malicious intent.
There are several types of malware and each of them has a unique way of infiltrating your computer which may include attempts at
gaining unauthorized control of your computer systems, stealing your personal information, encrypting your important files, or causing
other harm to your computers.
Sometimes the damage can be irrevocable.
Where does malware come from?
Some of the most common sources of malware are email attachments, malicious websites, torrents, and shared networks.
Phishing – Emails can be disguised to be coming from a fraudulent company for the sole purpose of getting you to reveal personal
getting you to reveal personal information.
Malicious Websites – Some websites may attempt to install malware onto your computer, usually through popups or malicious links.
through popups or malicious links.
Torrents – Files shared through BitTorrents are generally unsafe because you never know what to expect until they’re downloaded.
expect until they’re downloaded.
Shared Networks – A malware-infected computer on the same shared network may spread malware onto your computer
onto your computer

8. Types Of Virus

9. Here’s a list of the common types of malware and their malicious intent:-
1. Trojans:-
A Trojan (or Trojan Horse) disguises itself as legitimate software with the purpose of tricking you into executing malicious
2. Spyware:-
Spyware invades your computer and attempts to steal your personal information such as credit card or banking information, web
accounts.
3. Adware
Adware is unwanted software that displays advertisements on your screen. Adware collects personal information from you to
4. Rootkits
Rootkits enable unauthorized users to gain access to your computer without being detected.
5. Ransomware
Ransomware is designed to encrypt your files and block access to them until a ransom is paid.
6. Worms
A worm replicates itself by infecting other computers that are on the same network. They’re designed to consume bandwidth and
7. Keyloggers
Keyloggers keep track of your keystrokes on your keyboard and record them on a log. This information is used to gain

10. Impact of Virus:-
Let us now see the impact of virus on yourcomputer system −
•Disrupts thenormal functionalityof respective computer system.
•Disrupts system network use.
•Modifies configuration setting of the system.
•Destructs data.
•Disrupts computernetwork resources.
•Destructs of confidential data.
Virus Detection:-
The most fundamental method of detection of virus is to check the functionality of your computer system; a virus
affected computer does not take command properly.
However, if there is antivirus software in your computer system, then it can easily check programs and files on a
system for virus signatures.

11.  Virus Preventive Measures:-
 Installation of an effective antivirus software.
 Patching up the operating system.
 Patching up theclient software.
 Putting highlysecured Passwords.
 Useof Firewalls.
 Most Effective Antivirus:-
 McAfeeAntivirus Plus
 SymantecNortonAntivirus
 Avast Pro Antivirus
 Bitdefender Antivirus Plus
 Kaspersky Anti-Virus
 Avira Antivirus
 Webroot SecureAnywhereAntivirus
 Emsisoft Anti-Malware
 QuickHeal Antivirus
 ESET NOD32Antivirus

12. Antivirus software is a set of programs that can prevent, detect, remove, and search for different
viruses or other malware software like worms, trojan, adware, etc.
Basically, the computer devices use this software but, it also works on networks and IT systems.
Net Protector Total Security:-
Net Protector defends your Office Network from all viruses,
worm and spyware attacks and keeps your business lifeline,
Network and PCs, running smoothly and securely.
Total Security
Net Protector Total Security provides you multilayered
protection. Ensures smooth, fast internet connection and
surfing. Reduces Unwanted Traffic.
Real-time Protection stops the viruses before they reach your
Personal Computer, keeping your Applications and Data safe.
Complete security solution for home users.
Antivirus

13. Antivirus & Anti-Malware
Multilayered protection against all types of viruses.
Behavior Heuristic Control
Detects & Blocks Ransomware actions in the system with different heuristic rules.
Ransomware LAN Shield
Protects data in the system, even if the infection is originated at some other endpoints in the network.
Firewall
Monitors & blocks all malicious incoming & outgoing internet connections.
Data Backup
Automatically, backups your recently edited Documents for safe keeping against any corruption or ransomware.
Anti-phishing
Blocks fraudulent bank look-alike pages & login credential stealing links.
Advertise Blocker
Protects from malicious Adware & saves internet bandwidth, CPU, Memory.
Anti-Ransomware Shield
Blocks new, unknown Ransomware which corrupt & encrypt data files.
Automatic Updates
Updates antivirus in the background automatically every hour as connected to internet.
Parental Control
Ensure appropriate and safe usage of Internet, applications and
devices for your child through NPAV's Parental Control.

14. By getting a Norton® Secured Seal, you get a scheduled
Symantec® Malware Scan daily, which automatically
shields the site from any chance of getting infected by
malicious software.
Norton AntiVirus Plus enables you to scan your
computer for malware, spyware, ransomware, and
viruses. It offers a Quick Scan option or a comprehensive
Full System Scan, as well as the ability to scan custom
locations to find and remove threats.
Website :-
https://us.norton.com/blog/malware/what-is-antivirus
Antivirus software helps protect your computer against
malware and cybercriminals. Antivirus software looks at
data — web pages, files, software, applications —
traveling over the network to your devices. It searches for
known threats and monitors the behavior of all programs,
flagging suspicious behavior. It seeks to block or remove
malware as quickly as possible.

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