Computer Viruses

 Computer Crimes:
- Any crime that involves network & computer use.

• cyber crimes -uses not only computers but other gadgets and SNS's (social networking sites)

Example of Computer Crimes:
1. Breaking Firewall
2. Infecting computers with virus
3. Hacking

Computer Virus:
- Malware
- Installs and replicates itself without the users consent.

Types of Computer Crimes:
1. Theft of Information
2. Theft of Funds
3. Theft of Computer Hardwares

V-  vital
I- information
R- esource
U-under
S- seige

Virus:
- Refers to any rogue software

Types of Virus:
1. Resident Virus- hides in RAM
- performs unauthorized tasks and functions.
Example: Abraxas

2. Boot Virus- infects the boot sector of a floppy or hard disk.
Example: Playboot B and Anti EXE

3. Overwrite Virus- replaces file contents.
Example: Way Trivial 88D

4. Macro Virus- causes repeating start up
Example: Bablas

5. Directory Virus- change he path that indicates fill location.
Example: Peacer Bug

6. Direct Virus

- directly affects the master program or as of a computer.
Example: Universal Peace

COMPUTER HARDWARES

Central Processing Unit

•It is like a super calculator of a computer.

Hard Disk

·It acts as the permanent data storage of the computer unlike the memory card it can store data even if you reformat the computer.

Mouse

·It allows you to move the cursor on the screen wherever you want to.

Mother Board

·It is the electronic exoskeleton of the computer and its connected to all parts of the computer.

Input/Output Ports

·It allows you to connect by devices to the computer.It has USB, Audio Ports, etc.

Cooling System(Fan)

·Helps your personal computer on Cooling Down most of the cooling system are fans.

Optical Drive

·Also known as DVD Drive it allows you to insert any read only memories like CDs and DVDs.

Monitor (Output Device)

·It allows you to see what you are doing in the computer.

 Expansion Card

·Upgradable cards like graphic cards, network adapter,sound cards,etc.

Keyboard

·It allows you to type any word to the computer it has numerical and alphabetical buttons.

System Unit

·It contains the whole mother board together and it also has the wiring inside the computer.

Printer

·It allows you to turn a soft copy into a hard copy.