DC16_Ch05.pptx3u2ed82bd8y32byd823ybd8yb32db823dbb32d

Chapter 5
Digital Security,
Ethics, and Privacy
Discovering Computers 2016
Tools, Apps, Devices, and the Impact of Technology

© 2016 Cengage Learning®. May not be scanned, copied o
r duplicated, or posted to a publicly accessible website, in
Objectives Overview
Define the term, digital
security risks, and
briefly describe the
types of cybercriminals
Describe various types
of Internet and network
attacks, and explain
ways to safeguard
against these attacks
Discuss techniques to
prevent unauthorized
computer access and
use
Explain the ways that
software manufacturers
protect against
software piracy
Discuss how
encryption, digital
signatures, and digital
certificates work
2
See Page 212
for Detailed Objectives

Objectives Overview
Identify safeguards
against hardware theft,
vandalism, and failure
Explain the options
available for backing up
Identify risks and
safeguards associated
with wireless
communications
Recognize issues related
to information accuracy,
intellectual property
rights, codes of conduct,
and green computing
Discuss issues
surrounding information
privacy
3
See Page 212
for Detailed Objectives

Digital Security Risks
• A digital security risk is any event or action that could
cause a loss of or damage to a computer or mobile device
hardware, software, data, information, or processing
capability
• Any illegal act involving the use of a computer or related
devices generally is referred to as a computer crime
• A cybercrime is an online or Internet-based illegal act
4
Page 212

5
Page 213
Figure 5-1

Hacker Cracker Script kiddie
Corporate spies
Unethical
employees
Cyberextortionist
Cyberterrorist
6
Page 214

Internet and Network Attacks
• Information transmitted
over networks has a higher
degree of security risk than
information kept on an
organization’s premises
• Malware, short for
malicious software, consists
of programs that act
without a user’s knowledge
and deliberately alter the
operations of computers
and mobile devices
7
Page 215
Table 5-1

8

9
Page 215
Figure 5-2

• A botnet is a group of compromised computers or mobile devices
connected to a network
– A compromised computer or device is known as a zombie
• A denial of service attack (DoS attack) disrupts computer access to
an Internet service
– Distributed DoS attack (DDoS attack)
• 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
10
Pages 216 - 217

• A firewall is hardware and/or software that
protects a network’s resources from intrusion
11
Pages 219 - 220
Figure 5-4

Unauthorized Access and Use
Unauthorized access is
the use of a computer or
network without
permission
Unauthorized use is the
use of a computer or its
data for unapproved or
possibly illegal activities
12
Page 221

• Organizations take
several measures to
help prevent
unauthorized access
and use
– Acceptable use policy
– Disable file and printer
sharing
13
Page 221
Figure 5-5

• Access controls define who can access a
computer, device, or network; when they can
access it; and what actions they can take while
accessing it
• The computer, device, or network should maintain
an audit trail that records in a file both successful
and unsuccessful access attempts
– User name
– Password
14
Pages 222 - 223
Figure 5-6

• A passphrase is a private combination of words, often containing
mixed capitalization and punctuation, associated with a user name
that allows access to certain computer resources
• A PIN (personal identification number), sometimes called a
passcode, is a numeric password, either assigned by a company or
selected by a user
• A possessed object is any item that you must possess, or carry with
you, in order to gain access to a computer or computer facility
• 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 or mobile device verifying a physical or
behavioral characteristic
Pages 223 - 224 15

Fingerprint
reader
Face
recognition
system
Hand
geometry
system
Voice
verification
system
Signature
verification
system
Iris
recognition
system
16
Pages 224 – 226
Figures 5-8 – 5-11

17
• Two-step verification uses two separate methods,
one after the next, to verify the identity of a user
Pages 226 – 227
Figure 5-12

• Digital forensics is the discovery, collection, and
analysis of evidence found on computers and
networks
• Many areas use digital forensics
18
Page 227
Law
enforcement
Criminal
prosecutors
Military
intelligence
Insurance
agencies
Information
security
departments

Software Theft
• Software theft occurs when someone:
19
Page 228
Steals software
media
Intentionally
erases programs
Illegally registers
and/or activates
a program
Illegally copies a
program

Software Theft
• Many manufacturers incorporate an activation
process into their programs to ensure the
software is not installed on more computers than
legally licensed
• During the product activation, which is conducted
either online or by phone, users provide the
software product’s identification number to
associate the software with the computer or
mobile device on which the software is installed
20
Page 228

Software Theft
• A license agreement is the right to use software
21
Pages 228 – 229
Figure 5-13

Information Theft
• Information theft occurs when someone steals
personal or confidential information
• Encryption is a process of converting data that is
readable by humans into encoded characters to
prevent unauthorized access
22
Page 229

Information Theft
23
Page 230
Figure 5-14

Information Theft
• A digital signature is an encrypted code that a person,
website, or organization attaches to an electronic
message to verify the identity of the message sender
– Often used to ensure that an impostor is not participating
in an Internet transaction
• A digital certificate is a notice that guarantees a user
or a website is legitimate
• A website that uses encryption techniques to secure
its data is known as a secure site
24
Page 231

Information Theft
25
Page 231
Figure 5-15

Hardware Theft, Vandalism, and Failure
Hardware theft is the
act of stealing digital
equipment
Hardware vandalism
is the act of defacing
or destroying digital
equipment
26
Page 233

Hardware Theft, Vandalism, and Failure
27
Page 233
Figure 5-16

Backing Up – The Ultimate Safeguard
• A backup is a duplicate of a file, program, or
media that can be used if the original is lost,
damaged, or destroyed
– To back up a file means to make a copy of it
• Off-site backups are stored in a location separate
from the computer or mobile device site
28
Pages 233 - 234
Cloud
Storage

• Categories of backups:
– Full
– Differential
– Incremental
– Selective
– Continuous data
protection
– Cloud
• Three-generation
backup policy
29
Page 234
Grandparen
t
Parent
Child

30
Page 234
Table 5-2

Wireless Security
• Wireless access poses
additional security risks
• Some perpetrators connect
to other’s wireless networks
to gain free Internet access
or confidential data
• Others connect to a
network through an
unsecured wireless access
point (WAP) or combination
router/WAP
31
Page 236
Figure 5-18

Ethics and Society
• Technology ethics are the
moral guidelines that
govern the use of
computers, mobile
devices, information
systems, and related
technologies
• Information accuracy is a
concern
– Not all information on the
Internet is correct
32
Pages 238 - 240
Figure 5-20

Ethics and Society
33
Page 240
• Intellectual property refers to unique and original
works such as ideas, inventions, art, writings,
processes, company and product names, and logos
• Intellectual property rights are the rights to which
creators are entitled to their work
• A copyright protects any tangible form of expression
• Digital rights management (DRM) is a strategy
designed to prevent illegal distribution of movies,
music, and other digital content

Ethics and Society
34
Page 241
Figure 5-21
• A code of conduct is a written guideline that helps
determine whether a specification is
ethical/unethical or allowed/not allowed

Ethics and Society
• Green computing involves reducing the electricity
and environmental waste while using computers,
mobile devices, and related technologies
35
Page 241
Figure 5-22

Information Privacy
• Information privacy refers to the right of individuals
and companies to deny or restrict the collection,
use, and dissemination of information about them
• Huge databases store data online
• Websites often collect data about you, so that they
can customize advertisements and send you
personalized email messages
• Some employers monitor your computer usage and
email messages
36
Page 242

Information Privacy
37
Page 242
Figure 5-23

Information Privacy
• Information about you
can be stored in a
database when you:
– Fill out a printed or
online form
– Create a profile on an
online social network
– Register a product
warranty
38
Pages 242 - 243
Figure 5-24

Information Privacy
• A cookie is a small text file that a web server stores on
your computer
• Websites use cookies for a variety of reasons:
39
Pages 243 - 244
Allow for
personalization
Store user
names and/or
passwords
Assist with
online
shopping
Track how
often users visit
a site
Target
advertisements

Information Privacy
40
Page 244
Figure 5-25

Information Privacy
• Phishing is a scam in which a perpetrator sends an
official looking email message that attempts to
obtain your personal and/or financial information
• With clickjacking, an object that can be tapped or
clicked on a website contains a malicious program
41
Pages 244 - 245

Information Privacy
• Spyware is a program placed on a computer or
mobile device without the user’s knowledge that
secretly collects information about the user and
then communicates the information it collects to
some outside source while the user is online
• Adware is a program that displays an online
advertisement in a banner or pop-up window on
webpages, email messages, or other Internet
services
42
Page 245

Information Privacy
• Social engineering is defined as gaining
unauthorized access to or obtaining confidential
information by taking advantage of the trusting
human nature of some victims and the naivety of
others
43
Page 245

Information Privacy
• The concern about privacy has led to the
enactment of federal and state laws regarding the
storage and disclosure of personal data
– See Table 5-3 on page 246 for a listing of major U.S.
government laws concerning privacy
44
Page 246

Information Privacy
Employee monitoring involves the use of computers, mobile
devices, or cameras to observe, record, and review an
employee’s use of a technology, including communications such
as email messages, keyboard activity (used to measure
productivity), and websites visited
Many programs exist that easily allow employers to monitor
employees. Further, it is legal for employers to use these
programs
45
Page 247

Information Privacy
• Content filtering is the
process of restricting
access to certain
material
– Many businesses use
content filtering
• Web filtering software
restricts access to
specified websites
46
Pages 247 - 248
Figure 5-26

Summary
Variety of digital security risks Cybercrime and cybercriminals
Risks and safeguards associated
with Internet and network
attacks, unauthorized access and
use, software theft, information
theft, and hardware theft,
vandalism, and failure
Various backup strategies and
methods of securing wireless
communications
Ethical issues in society and
various ways to protect the
privacy of personal information
47
Page 249

Chapter 5
Digital Security,
Ethics, and Privacy
Discovering Computers 2016
Tools, Apps, Devices, and the Impact of Technology
Chapter 5 Complete

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