Our Digital World Second Edition Chapter 8 Digital Defense: Securing Your Data and Privacy © Paradigm Publishing, Inc.1

Our Digital WorldSecond Edition

Chapter 8

Digital Defense: Securing Your Data and Privacy

© Paradigm Publishing, Inc. 2

This chapter will help you to:

• Recognize risks of a networked computer.• Explain types of malware and anti-malware tools.• Identify a trusted online site.• Understand security risks of mobile devices.• Identify risks to hardware and software in the

workplace.


Main Topics• 8.1 The Role of Security and Privacy in Your

Digital World • 8.2 When Security Gets Personal• 8.3 Mobile Security• 8.4 Security at Work• 8.5 Security Defenses Everybody Can Use


Why Should You Care?

• Digital information is valuable and at risk.

• Antivirus software alone isn’t enough.

• Save time and become less vulnerable.


8.1 The Role of Security and Privacy in Your Digital World


Understand Security Threats

• Computer security protects your network and computers.

• Data loss prevention plan reduces risk.• Various threats from malware.• Several sources for threats.


The Secure PC


Spotlight on the Future

• What are some recent digital attacks that Silverman references?

• What is Silverman’s opinion about the future of computer and network security?

• What steps does Silverman advocate for improving computer security?

• Does Silverman think there’s a “magic bullet” that will greatly reduce computer crime? If so, what is it?

• What is “spearfishing” in the context of computer crime?

The Changing Face of Online Crime


Basic Tools of Computer Security

• Authentication.• Technology.• User procedures.


Terms to Know

• computer security• data loss prevention (DLP)• hacker• Authentication• Advanced persistent threat (APT)


Ask Yourself…

What aspect of computer security minimizes risk of loss or theft of data?

a. damage loss plan

b. data loss prevention

c. requiring that all users log in with the same password

d. None of the above

8.2 When Security Gets Personal



Protecting Home Networks

• Unprotected networks are vulnerable.• Access point or router password protection.• Encryption codes data.


Public Key Encryption


Understanding Malware

• Malicious software installs itself on your computer.• Results include pop-ups, viruses, or tracking.• Malware includes:– Viruses– Trojans– Macro viruses and logic bombs– Rootkits– Spyware– Adware


Virus Attacks


Worm Attacks


Trojan Horse


Spyware and Adware

• Spyware spies on the activity of a computer users.

• Adware delivers ads.


How Malware Uses Botnets


How Malware Is Spread

• Opening an email attachment that contains an executable file.

• Downloading a picture with a virus in it.• Visiting an infected website.• Sharing infected storage devices.• Connecting to an infected network.


Playing It Safe

• Email chain letters are used to deliver malware.

• Collect email addresses for spamming.


Recognizing Secure Sites

• Familiarity and accreditations.

• Transport Layer Security (TSL).

• Site advisors.• Use of cookies.


Defensive Browsing

• Free offers really aren’t free.• Risks of clicking on links in

advertisements.• Risks of clicking on email attachments.


Terms to Know

• encryption• public key• private key• public key encryption• Wi-Fi Protected Access (WPA)• Wired Equivalent Privacy (WEP)• malware• spam• virus


Terms to Know

• worm• Trojan horse• macro virus• logic bomb virus• rootkit• botnet• zombie


Terms to Know

• spyware• adware• scareware• Transport Layer Security (TLS)• cookie• Secure Socket Layer (SSL)• phishing


Ask Yourself…

When looking for a trustworthy retailer, it is best to

a. follow an email link from a retailer that has a free offer.

b. follow links in an advertisement to locate retailers that provide the item at a good price.

c. enter the URL for a brick-and-mortar retail store.

d. All of the above

8.3 Mobile Security



Protecting a Laptop

• Use a lock. • Use a fingerprint

reader.• Activate password

protection.• Company mobile

computing policies.


Using Public Wi-Fi Access

• Public computers aren’t protected.

• Avoid accessing financial accounts or making purchases.


Cell Phone Safety

• Cell phone theft.• Exposure when using Bluetooth.


Ask Yourself…

What can you do to protect your laptop?a. enable password protection.

b. purchase a fingerprint reader

c. use a cable and lock.

d. All of the above

8.4 Security at Work


Corporate Security Tools

• Intrusion Prevision System (IPS)• Honeypot• Symmetric encryption



Symmetric Encryption


Controlling Access

• Physical security.• Authentication.• Employee training.


Denial of Service Attacks


Disaster Planning and Training

• Disaster recovery plan (DRP).• Backing up.• Uninterruptable power supply (UPS).• Employee training.


Computers in Your Career

• Extracting evidence from computers.• Decrypting data.• Mobile forensics.


Terms to Know

• symmetric encryption• Intrusion Prevention System (IPS)• anomaly-based intrusion detection

system• honeypot• social engineer• biometrics• spoofing


Terms to Know

• denial-of-service (DoS) attack• disaster recovery plan (DRP)• cold server• warm server• hot server• failover


Terms to Know

• surge protector• uninterruptible power supply (UPS)• cyberforensics• mobile forensics• decryption• digital rights management (DRM)


Ask Yourself…

What is the process of redirecting users to a hot server called?

a. disaster recovery

b. failsafe

c. failover

d. cold server fallback

8.5 Security Defenses Everybody Can Use



Security Defenses

• Firewalls.• Antivirus/antispyware.• Using passwords

effectively.


Terms to Know

• antivirus software• antispyware software• virus definitions• strong password• digital certificate• digital signature


Ask Yourself…

What do some forms of authentication rely on to a great extent?

a. strong user passwords

b. frequent software updates

c. antivirus definitions

d. firewalls

Our Digital World


Documents

Our Digital World Second Edition Chapter 8 Digital Defense: Securing Your Data and Privacy © Paradigm Publishing, Inc.1