DCF_Chapter5

Objectives Overview:

Objectives Overview Discovering Computers & Microsoft Office 2010: Discovering Computers Chapter 5 2 See Page 181 for Detailed Objectives

Objectives Overview:

Objectives Overview Discovering Computers & Microsoft Office 2010: Discovering Computers Chapter 5 3 See Page 181 for Detailed Objectives

Computer Security Risks:

Computer Security Risks A computer security risk is any event or action that could cause a loss of or damage to computer hardware, software, data, information, or processing capability A cybercrime is an online or Internet-based illegal act Discovering Computers & Microsoft Office 2010: Discovering Computers Chapter 5 4 Pages 182 - 183

Computer Security Risks:

Computer Security Risks Discovering Computers & Microsoft Office 2010: Discovering Computers Chapter 5 5 Pages 182 - 183 Figure 10-1

Internet and Network Attacks:

Internet and Network Attacks Discovering Computers & Microsoft Office 2010: Discovering Computers Chapter 5 6 Page 184 Information transmitted over networks has a higher degree of security risk than information kept on an organization’s premises

Internet and Network Attacks:

Internet and Network Attacks An infected computer has one or more of the following symptoms: Discovering Computers & Microsoft Office 2010: Discovering Computers Chapter 5 7 Page 184

Internet and Network Attacks:

Internet and Network Attacks Discovering Computers & Microsoft Office 2010: Discovering Computers Chapter 5 8 Page 185 Figure 10-2

Internet and Network Attacks:

Internet and Network Attacks Users can take several precautions to protect their home and work computers and mobile devices from these malicious infections Discovering Computers & Microsoft Office 2010: Discovering Computers Chapter 5 9 Pages 185 – 187 Figure 10-4

Internet and Network Attacks:

Internet and Network Attacks Discovering Computers & Microsoft Office 2010: Discovering Computers Chapter 5 10 Page 186 Figure 10-3

Internet and Network Attacks:

Internet and Network Attacks A botnet is a group of compromised computers connected to a network A compromised computer is known as a zombie A denial of service attack ( DoS attack ) disrupts computer access to Internet services A back door is a program or set of instructions in a program that allow users to bypass security controls Spoofing is a technique intruders use to make their network or Internet transmission appear legitimate Discovering Computers & Microsoft Office 2010: Discovering Computers Chapter 5 11 Pages 187 - 188

Internet and Network Attacks:

Internet and Network Attacks A firewall is hardware and/or software that protects a network’s resources from intrusion Discovering Computers & Microsoft Office 2010: Discovering Computers Chapter 5 12 Pages 18 - 189 Figure 10-5

Internet and Network Attacks:

Internet and Network Attacks Discovering Computers & Microsoft Office 2010: Discovering Computers Chapter 5 13 Page 189

Unauthorized Access and Use:

Unauthorized Access and Use Discovering Computers & Microsoft Office 2010: Discovering Computers Chapter 5 14 Page 189

Unauthorized Access and Use:

Unauthorized Access and Use Access controls define who can access a computer, when they can access it, and what actions they can take Two-phase processes called identification and authentication User name Password CAPTCHA Discovering Computers & Microsoft Office 2010: Discovering Computers Chapter 5 15 Pages 189 - 190 Figure 10-6

Unauthorized Access and Use:

Unauthorized Access and Use A possessed object is any item that you must carry to gain access to a computer or computer facility Often are used in combination with a personal identification number ( PIN ) A biometric device authenticates a person’s identity by translating a personal characteristic into a digital code that is compared with a digital code in a computer Discovering Computers & Microsoft Office 2010: Discovering Computers Chapter 5 16 Page 191 Figure 10-8

Unauthorized Access and Use:

Unauthorized Access and Use Digital forensics is the discovery, collection, and analysis of evidence found on computers and networks Many areas use digital forensics Discovering Computers & Microsoft Office 2010: Discovering Computers Chapter 5 17 Page 192

Hardware Theft and Vandalism:

Hardware Theft and Vandalism Discovering Computers & Microsoft Office 2010: Discovering Computers Chapter 5 18 Page 193

Hardware Theft and Vandalism:

Hardware Theft and Vandalism To help the reduce of chances of theft, companies and schools use a variety of security measures Discovering Computers & Microsoft Office 2010: Discovering Computers Chapter 5 19 Page 193 Figure 10-9

Software Theft:

Software Theft Software theft occurs when someone: Discovering Computers & Microsoft Office 2010: Discovering Computers Chapter 5 20 Page 193

Software Theft:

Software Theft A single-user license agreement typically contains the following conditions: Discovering Computers & Microsoft Office 2010: Discovering Computers Chapter 5 21 Page 194

Software Theft:

Software Theft Copying, loaning, borrowing, renting, or distributing software can be a violation of copyright law Some software requires product activation to function fully Discovering Computers & Microsoft Office 2010: Discovering Computers Chapter 5 22 Page 194 Figure 10-10

Information Theft:

Information Theft Information theft occurs when someone steals personal or confidential information Encryption is a process of converting readable data into unreadable characters to prevent unauthorized access Discovering Computers & Microsoft Office 2010: Discovering Computers Chapter 5 23 Page 195 Figure 10-11

Information Theft:

Information Theft A digital signature is an encrypted code that a person, Web site, or organization attaches to an electronic message to verify the identity of the sender A digital certificate is a notice that guarantees a user or a Web site is legitimate Issued by a certificate authority Discovering Computers & Microsoft Office 2010: Discovering Computers Chapter 5 24 Pages 195 - 196

Information Theft:

Information Theft Discovering Computers & Microsoft Office 2010: Discovering Computers Chapter 5 25 Page 195 Figure 10-12

System Failure:

System Failure A system failure is the prolonged malfunction of a computer A variety of factors can lead to system failure, including: Aging hardware Natural disasters Electrical power problems Errors in computer programs Discovering Computers & Microsoft Office 2010: Discovering Computers Chapter 5 26 Page 196

System Failure:

System Failure Two ways to protect from system failures caused by electrical power variations include surge protectors and uninterruptable power supplies ( UPS ) Discovering Computers & Microsoft Office 2010: Discovering Computers Chapter 5 27 Page 196 Figures 10-13 – 10-14

Backing Up – The Ultimate Safeguard:

Backing Up – The Ultimate Safeguard A backup is a duplicate of a file, program, or disk that can be used if the original is lost, damaged, or destroyed To back up a file means to make a copy of it Offsite backups are stored in a location separate from the computer site Discovering Computers & Microsoft Office 2010: Discovering Computers Chapter 5 28 Page 196 Cloud Storage

Backing Up – The Ultimate Safeguard:

Backing Up – The Ultimate Safeguard Two categories of backups: Full backup Selective backup Three-generation backup policy Discovering Computers & Microsoft Office 2010: Discovering Computers Chapter 5 29 Page 197

Wireless Security:

Wireless Security Wireless access poses additional security risks About 80 percent of wireless networks have no security protection War driving allows individuals to detect wireless networks while driving a vehicle through the area Discovering Computers & Microsoft Office 2010: Discovering Computers Chapter 5 30 Page 197

Health Concerns of Computer Use:

Health Concerns of Computer Use The widespread use of computers has led to health concerns Repetitive strain injury ( RSI ) Tendonitis Carpal tunnel syndrome (CTS) Computer vision syndrome ( CVS ) Discovering Computers & Microsoft Office 2010: Discovering Computers Chapter 5 31 Page 198 Figure 10-15

Health Concerns of Computer Use:

Health Concerns of Computer Use Discovering Computers & Microsoft Office 2010: Discovering Computers Chapter 5 32 Page 198 Figure 10-16

Health Concerns of Computer Use:

Health Concerns of Computer Use Ergonomics is an applied science devoted to incorporating comfort, efficiency, and safety into the design of items in the workplace Discovering Computers & Microsoft Office 2010: Discovering Computers Chapter 5 33 Page 199 Figure 10-17

Health Concerns of Computer Use:

Health Concerns of Computer Use Computer addiction occurs when the computer consumes someone’s entire social life Symptoms of users include: Discovering Computers & Microsoft Office 2010: Discovering Computers Chapter 5 34 Page 199

Ethics and Society:

Ethics and Society Computer ethics are the moral guidelines that govern the use of computers and information systems Information accuracy is a concern Not all information on the Web is correct Discovering Computers & Microsoft Office 2010: Discovering Computers Chapter 5 35 Page 199 – 201 Figure 10-19

Ethics and Society:

Ethics and Society Discovering Computers & Microsoft Office 2010: Discovering Computers Chapter 5 36 Page 201

Ethics and Society:

Ethics and Society Green computing involves reducing the electricity and environmental waste while using a computer ENERGY STAR program Discovering Computers & Microsoft Office 2010: Discovering Computers Chapter 5 37 Pages 201 - 202 Figure 10-20

Ethics and Society:

Ethics and Society Information privacy refers to the right of individuals and companies to deny or restrict the collection and use of information about them Huge databases store data online It is important to safeguard your information Discovering Computers & Microsoft Office 2010: Discovering Computers Chapter 5 38 Page 202 - 203

Ethics and Society:

Ethics and Society Discovering Computers & Microsoft Office 2010: Discovering Computers Chapter 5 39 Page 203 Figure 10-21

Ethics and Society:

Ethics and Society When you fill out a form, the merchant that receives the form usually enters it into a database Many companies today allow people to specify whether they want their personal information distributed Discovering Computers & Microsoft Office 2010: Discovering Computers Chapter 5 40 Page 203

Ethics and Society:

Ethics and Society A cookie is a small text file that a Web server stores on your computer Web sites use cookies for a variety of reasons: Discovering Computers & Microsoft Office 2010: Discovering Computers Chapter 5 41 Pages 203 - 204

Ethics and Society:

Ethics and Society Discovering Computers & Microsoft Office 2010: Discovering Computers Chapter 5 42 Page 204 Figure 10-22

Ethics and Society:

Ethics and Society Spam is an unsolicited e-mail message or newsgroup posting E-mail filtering blocks e-mail messages from designated sources Anti-spam programs attempt to remove spam before it reaches your inbox Discovering Computers & Microsoft Office 2010: Discovering Computers Chapter 5 43 Pages 204 - 205 Figure 10-23

Ethics and Society:

Ethics and Society Phishing is a scam in which a perpetrator sends an official looking e-mail message that attempts to obtain your personal and financial information Pharming is a scam where a perpetrator attempts to obtain your personal and financial information via spoofing Discovering Computers & Microsoft Office 2010: Discovering Computers Chapter 5 44 Page 205 Figure 10-24

Ethics and Society:

Ethics and Society The concern about privacy has led to the enactment of federal and state laws regarding the storage and disclosure of personal data See Figure 10-25 on page 406 for a listing of major U.S. government laws concerning privacy Discovering Computers & Microsoft Office 2010: Discovering Computers Chapter 5 45 Page 206

Ethics and Society:

Ethics and Society Discovering Computers & Microsoft Office 2010: Discovering Computers Chapter 5 46 Pages 205 - 207

Ethics and Society:

Ethics and Society Content filtering is the process of restricting access to certain material on the Web Many businesses use content filtering Web filtering software restricts access to specified Web sites Discovering Computers & Microsoft Office 2010: Discovering Computers Chapter 5 47 Page 207 Figure 10-26

Summary:

Summary Discovering Computers & Microsoft Office 2010: Discovering Computers Chapter 5 48 Page 208

Slide 49:

Complete