The document discusses several topics related to online privacy, security, and social issues for social networks. It covers wireless LANs, location-based services using GPS, internet telephony and web conferencing, security and privacy concerns regarding personal information online, network security issues and technologies, virtual private networks, the digital divide in internet access, and copyright issues regarding file sharing.

1. Privacy and security
online; social issues
for a social network
CIT101I: Using the Internet
April 18, 2012

2. Wireless LAN
 Uses a wireless
medium — such as
radio frequency
transmissions — to
connect computers,
printers, and other
devices
 RF is most common
for WiFi hotspots
 IR or Bluetooth for
short2 range devices

3. Networking Basics
3

4. Location-Based Services
and GPS
 Handheld wireless
devices, such as
smartphones and
tablets, are ubiquitous
in today’s modern
mobile societies
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5. Location-Based Services
and GPS
 Location-based services (LBS) are
wireless services offered to customers
based on their physical location
 E9-1-1
 At the heart of this and other LBSs are
the global positioning system
(GPS) satellite network and receivers
mounted in automobiles or placed in
cell phones or other handheld devices
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Internet Technologies and
Security

6. Location-Based Services
and GPS
 Geosocial
networking is a term
used to describe the
combination of LBS
with social networking
providers
 Foursquare
 Yelp
 Google Latitude
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Internet Technologies and
Security

7. Internet Telephony and Web
Conferencing
 Internet telephony
 Voice over IP (VoIP)
 Uses TCP/IP and packet switching to send voice
transmissions over private or public IP network
• E-businesses, such as Vonage, offer digital telephony
services
• Computer to computer calling using special software,
such as Skype
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8. Internet Telephony and Web
Conferencing
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9. Security/privacy
 Security: how safe is our data and equipment?
 Privacy: how safe is my information?
 Passwords (biometrics?)
 Firewalls
 Viruses
 Data encryption
 Spam and spyware
 Cookies
 Browser history and cache
 Cyberstalking
 Cyberbullying
 Questions to ask about sharing information online:
 Who, what, when, where, why, and how?

10. Network Security Issues and
Technologies
 Internal threats
 Security policies and
procedures
 Authorized network
access
 Wireless network
security
 Data backup and
restore
 Disaster recovery
planning
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11. Network Security Issues and
Technologies
 External threats
 Unauthorized network
access
 Computer viruses
 Web page hacking
 Firewalls and proxy
servers
 Internet filtering
software
 Security audits
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12. Network Security Issues and
Technologies
 Transactional
risks
 Protecting
and
validating
online
transaction
information
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13. Virtual Private Networks
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Internet Technologies and
Security

14. The digital divide
 Nearly 1 in 5 American adults does not use the Internet
(78% do, plus 95% of teens)
 Least likely users (% who use Internet):
 Adults over 65 – 41%
 <$30,000 household income – 62%
 No HS diploma – 43%
 62% have broadband, 3% dial-up, lots of mobile use
(88% have cell phones)
 65% of Internet users use social networks (50% of adults)
 What can’t you do without the Internet? (48% of non-
users say it’s not relevant to their lives)
 Pew Internet and American Life Survey in 2012

15. Copyright & file sharing
 Print, e-books, MP3 audio, video
 Protecting copyright of digital items
 Easier digitization of existing items
 Easier sharing of illegal copies (file sharing, etc.)
 Lack of legislative guidance (old law)
 DRM – Digital Rights Management
 Limiting copying and printing
 Breaks fair use exemptions?
 Stopping file sharing networks