Computer viruses презентация

Theme of the lesson:
Computer Viruses

What is a «virus»?
Computer virus is a very small program routine that infects a computer system and uses its resources to reproduce itself. It often does this by patching the operating system to enable it to detect program files, such as COM or EXE files. It then copies itself into those files.
When the user runs an infected program, it is loaded into memory carrying the virus. It can then use a reproduction routine to infect other programs. This process continues until the computer is switched off.

Classification of viruses
Trojans Viruses that pretend to be helpful programs while destroying your data, damaging your computer, and stealing your personal information.
Spyware Software that tracks your online activities.
first group

Classification of viruses
Spam unwanted, instant messages, and other online communication.
Identity Theft - a crime where con artists get your personal information and access your cash and/or credit.
second group

Classification of viruses
Worms - computer networks and e-mail are used for distribution.
Phishing sent by online criminals to trick you into going to fake Web sites and revealing personal information.
third group

1. A COMPUTER VIRUS IS A USEFUL PROGRAM.
2. VIRUSES CAN BE DISTRIBUTED VIA THE INTERNET.
3. «TROJAN HORSE» IS A TYPE OF COMPUTER VIRUS.
4. TO PROTECT AGAINST VIRUSES, USE ANTIVIRUS SOFTWARE.
5. «DOCTOR WEB» IS A TYPE OF COMPUTER VIRUS.
Check whether the statement is correct.