Computer viruses

1.

Choose a picture according to you mood.
Draw how you feel.

2.

3. Theme of the lesson: Computer Viruses

4. 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.

5. Classification of viruses

first group
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.

6. Classification of viruses

second 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.

7. Classification of viruses

third 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.

8. 1. A computer virus is a useful program. 2. Viruses can be distributed via the Internet. 3. «Trojan Horse» is a type of

Check whether the statement is correct.

9.

10.

Try
to think: what
strategies are used to
keep computers safe.
Prepare some steps in
advance.