English for Computing•Trần Thị Mai

•Nguyễn Thị Hồng Ngọc•Dương Thị Thanh Thúy•Nguyễn Thị Anh Thư•Vũ Thị Trâm

INTERNET SECURITY

1. Security on the Web

Security is crucial when you send confidential information online

Buying a book

Set all security alerts to high on your web browser

Web browser: software

application for retrieving,

presenting, and traversing

information resources on

the WWW

Lock disable or delete cookies

A cookie (web cookie, browser cookie, and HTTP cookie) is a piece of text stored on a user's computer by their web browser

Digital certificate files that are like digital identification cards to identify users & servers

Secure Sockets Layer (SSL)

is a commonly-used protocol for managing the security of a message transmission on the Internet

2. Email privacy

Email travels across the Net

Can be copied temporarily onto many computers

Can be read by others

Encode it with some form of encryption

Pretty Good Privacy (PGP) A freeware program

written by Phil Zimmerman

3. Network security

Passwords for access control

Firewalls

A system designed to prevent unauthorized access to or from a private network

Application gateway

Several types of firewall techniques:

Packet filter

Proxy server

Circuit-level gateway

Encryption and decryption systems

4. Malware protection

• Malware (malicious software) : programs designed to infiltrate or damage our computer• For example: viruses

wormsTrojansspywareadware

Viruses • A program or piece of code that is loaded onto your computer via a disc drive or the Internet without your knowledge

• Attaches itself to a program or file enabling it to spread from one computer to another

• Can copy itself

• Cannot infect your computer unless you run or open the malicious program

Worms • Similar to a virus by design and is considered to be a sub-class of a virus.

• Has the capability to spread from computer to computer without any human action

• Has the capability to replicate itself and use memory

• Cannot attach itself to other programs

Trojans horse• A destructive program that masquerades as a benign application

• Do not replicate themselves

One of the most insidious types of Trojan horse is a program that claims to rid your computer of viruses but instead introduces viruses onto your computer.

Spyware A type of malware that can be installed on computers, and which collects small pieces of information about users without their knowledge

Spyware programs can collect various types of personal information, such as Internet surfing habits and sites that have been visited, but can also interfere with user control of the computer in other ways, such as installing additional software and redirecting Web browser activity

Adware Software application in which advertising banners are displayed while the program is running

SOME ANTI- VIRUS SOFTWARE:

BkavPro Internet Security is antivirus software pioneer in the use of cloud technology (công nghệ điện toán đám mây )

Kaspersky Internet Security 2011 provides comprehensive protection for your computer from known and emerging threats, network attacks and phishing, spam and other unwanted information

5. Types of computer crimes

Computer crimes: criminal activities, involve the use of information technology to gain an illegal or an unauthorized access to a computer system with intent of damaging, deleting or altering computer data

Some types:• Hacking: The activity of breaking into a computer system to gain an unauthorized access

• Phishing: Phishing is the act of attempting to acquire sensitive information like usernames, passwords and credit card details by disguising as a trustworthy source

• Computer Viruses: Computer viruses are computer programs that can replicate themselves and harm the computer systems on a network without the knowledge of the system users

• Cyberstalking: The use of communication technology, mainly the Internet, to torture other individuals is known as cyberstalking

• Identity Theft: This is one of the most serious frauds as it involves stealing money and obtaining other benefits through the use of a false identity

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PUZZLE1. Users have to enter a _____ to gain

access to a network.2. A _____ Protects a company intranet

from outside attacks.3. A ____ is a person who uses computer

skills to enter computers and network illegally.

4. _____ can infect your files and corrupt your hard drive

5. You can download ____ from the net; this type of software is available free of charge but protected by copyright.

6. Encoding data so that unauthorized users can’t read it is know as_____.

7. This company uses _____ techniques to decode secret data.

8. Most____ is designed to obtain personal information without the user’s permission.

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