JSS 3 ICT NOTE 3rd Term


   THIRD TERM SCHEME OF WORK

Week 1 :   Computer virus (meaning, types of computer virus, example of computer          virus).                                                                   
Week 2 :   Source of computer virus.
Week 3 :    Virus warning signs.
Week 4 :     Virus detection (Anti - virus).
Week:     5 - 6 ;     Revision

Week:   7-12  revision and examination.



WEEK 1.

COMPUTER VIRUS

A computer virus is a malicious code designed to spread from host to host by itself without the user’s knowledge to perform malicious actions. It imposes harm to a computer by corrupting system files, destroying data or otherwise by being a nuisance. They are programs originally invented by for piracy protection.
How does a Computer Virus Spread
computer virus spreads through removable media, internet downloads, and e-mail attachments. In other words, a virus spreads while the user is viewing an infected advertisement, visiting an infected website, opening the attachment in the email, or clicking on an executable file. Besides that, connecting with an already infected removable storage device such as a USB drive also spreads the infection.

There are two ways by which a virus operates; the first type starts replicating itself as soon as it lands on the computer; the second type remains dormant until it is triggered.
Types of Computer Virus
§  1. Boot Sector Virus
§  2. Direct Action Virus
§  3. Resident Virus
§  4. Multipartite Virus
§  5. Polymorphic Virus
§  6. Overwrite Virus
§  7. Spacefiller Virus
§  8. File Infector Virus

Boot Sector Virus –
The Boot Sector virus infects the master boot record, and it mostly spreads through the removable media. It is a complex task to remove this virus and often requires the system to be formatted.
Direct Action Virus –
The Direct-Action Virus remains dormant on a computer until the file containing the virus is executed.
Resident Virus –
The Resident Virus inserts itself in a computer system’s memory. It is hard to identify the virus, and it is equally tough to remove it.
Multipartite Virus –
The Multipartite Virus infects and spreads in multiple ways. This virus infects both the program files and the system sectors.
Polymorphic Virus –
A Polymorphic Virus is more capable of altering its signature pattern whenever it replicates thereby rendering it hard to be detected.
Overwrite Virus –
As the name suggests, an Overwrite Virus spreads through emails and deletes all the files it infects.
Spacefiller Virus –
The Spacefiller Virus is also known as Cavity Virus; it occupies the empty spaces between the codes. It does not harm the files.
File Infector Virus –
A File Infector Virus is also known as Parasitic Virus because it comes attached to program files, such as .COM or .EXE files.

Assignment:
Mention 2 sources of computer Virus.



WEEK 2

SOURCES COMPUTER VIRUS
Sources of Computer Virus include;
1.     Downloading Programs.
Programs that contains the downloadable files are the commonest source of malware such as freeware, worms, and other executable files. ...
2.     Pirated or Cracked Software.
3. Email Attachments. ...
4. Internet.
5. Booting Data from Unknown CDs. ...
6. Bluetooth. ...
7. Unpatched Software.
8. Infected disk of flash drive.
EXAMPLES OF COMPUTER VIRUS
1.     Worms
2.     Trojan horse
3.     Adware
4.     Back doors
5.     Spyware
6.     Zombie
7.     Honey pot
8.     Ralia odinga
Assignment:
Mention 2 virus signs.




WEEK 3


VIRUS WARNING SIGN
The list of computer virus symptoms include:
1.   1.  A slow performing computer
2.     2. Pop-ups automatically showing up on the screen
3.   3.   Programs running on their own
4.   4.   Automatic multiplying/duplicating files
5.    5.  Presence of unknown files and applications on the computer
6.    5.  Files getting deleted or corrupted.
7.     6.  Everything seems not to b working with your PC.

When a user comes across any of these symptoms, then there are chances that the computer is virus infected.

ASSIGNMNT
Mention 3 Anti-virus




















WEEK 4
VIRUS DETECTION (ANTIVIRUS)
An anti virus is also a program written by the programmer to wipe away all the viruses on the computer systems.
Examples of antivirus include:
  1. Norton antivirus
  2. MCAFEE virus scan
  3. Doctor Solomon took kit
  4. Penicillin
  5. Avast
  6. Avira
  7. AVG
  8. Kaspersky
  9. Comoro anti virus
1       10. Panda security   etc

There are two approaches to erase computer infection. The first approach is do-it-yourself and the second approach is to ask for some help to get rid of the virus.
The antivirus is designed to protect computers from sophisticated threats too. Here’s a list of things that a user needs to do:
Step 1- Disconnect your computer from the internet
Step 2- Enter Safe Mode – this helps running only the required programs and applications.
Step 3- Delete all temporary files to free up the disk space
Step 4- Run a virus scan

VIRUS PROTECTION
1.    Install anti –virus software on the computer  system.
2.    Avoid the use of unauthorized software.
3.    Update your anti-virus  software regularly
4.    Make sure that the computer is always clean and free from dust








Comments

  1. Thank u sir
    This is a very good idea

    ReplyDelete
  2. This comment has been removed by the author.

    ReplyDelete
  3. Shokunbi wuraola 3a
    Thank you very much sir

    ReplyDelete
  4. Shokunbi wuraola 3a
    Thank you for your time and effort sir

    ReplyDelete
  5. Thank you very much sir ,God will bless you

    ReplyDelete
  6. Babalola rasheedat oyinkansola jss3b
    Thanks sir

    ReplyDelete
  7. Fagbayi Goodluck A
    Tanks for ur effort sir

    ReplyDelete
  8. Fantastic IT Facilitator, really gained a lot of knowledge from you, more anointing Sir.

    ReplyDelete
  9. More Grace to you Sir, and congratulations👏👏👏🎉🎉🍾🍸🍾🍾🍸 to you Mr. Tolulope Joseph on your emergence as the Maltina Teacher of the Year sir.

    ReplyDelete
  10. Congratulations 🌟👏👏🎉🎉🍾🍾🍸🍸 to your Mr. Tolulope Joseph Sir for emerging the Maltina Teacher of the Year.

    ReplyDelete

Post a Comment

Popular posts from this blog

ICT week 6

ICT SCHEME, AND WEEK 1