Safe SurfingSafe Surfing

An Introduction to the InternetAn Introduction to the Internet

BOLLI Spring 2008

Lesson 8: Is it Safe?Lesson 8: Is it Safe?

4/23/20084/23/2008

Where Are We Going Today?Where Are We Going Today?

1. What's in the News?1. What's in the News?

2. Class Q & A …. 2. Class Q & A ….

3. Homework Assignment #73. Homework Assignment #7

4. Is it Safe?4. Is it Safe?

5. Open Q&A5. Open Q&A

What’s In The News?What’s In The News?

• Class: Class: ??• You Tube: http://www.youtube.com/watch?You Tube: http://www.youtube.com/watch?

v=zBheC5afBfcv=zBheC5afBfc

Homework Assignment - Week 7Homework Assignment - Week 7

“Think your PC is safe? Think again. A new study indicates your home computer is likely bogged down with spyware, viruses and other scourges wrought by hackers and PC pranksters. Ignorance may be bliss for some people, but for computer users, not knowing may be costly and inefficient.”

Cynthia L. WebbWASHINGTON POST

Is it Safe?Is it Safe?

Subject: Norton Antivirus detected and quarantined a virus in a message you sent.

Recipient of the infected attachment: AAEXCH, First Storage Group, info/InboxSubject of the message: 0i09u5rug08r89589gjrg

One or more attachments were quarantined Attachment id43342.zip was quarantined for the following reasons: VirusW32.Netsky.P@mm was found

HAZARDSHAZARDS

SecuritySecurity

VirusesViruses

PhishingPhishing

Identity Theft Identity Theft

HoaxesHoaxes

(Spyware/Adware)(Spyware/Adware)

(Spam)(Spam)

HAZARDS, cont’d.HAZARDS, cont’d.

• What are they?What are they?

• What can you do to survive them?What can you do to survive them?

SECURITYSECURITY

• Protect yourself by establishing barriers to Protect yourself by establishing barriers to entry to your computer and its files.entry to your computer and its files.

• A basic step is to use effective passwords:A basic step is to use effective passwords:• Difficult to guessDifficult to guess• 6+ characters, with letters & numbers6+ characters, with letters & numbers• Change periodically.Change periodically.

SECURITY, cont’d.SECURITY, cont’d.

• Firewalls can block harmful applications Firewalls can block harmful applications and information from being transferred and information from being transferred between the Internet and your computerbetween the Internet and your computer

• You can use:You can use:• Software firewallsSoftware firewalls• Hardware routersHardware routers• Wireless routers.Wireless routers.

iMac

RS CS TR RD TD CDTALK / DATA

TALK

IDC

InternetService

ProviderCable or

DSL Modem

Hardware FirewallRouter &

Optional Hub

Home Computers

The Internet

SECURITY, cont’d.

VIRUSESVIRUSES

• A virus is a program or piece of code that is loaded onto your computer without your knowledge and acts against your interests (usually arrives as attachment).

VIRUSES, cont’dVIRUSES, cont’d

• Viruses can:• Transmit themselves across networks and

bypass security systems• Make copies of themselves• Take over computers.

• Avoid viruses by:• Not opening suspect attachments• Installing and updating anti-virus software.

PHISHINGPHISHING

• 12/17/2007 Gartner Survey: 12/17/2007 Gartner Survey: • More tMore than $3 Billion Lost han $3 Billion Lost • Debit Cards Targeted Most by FraudstersDebit Cards Targeted Most by Fraudsters

• 3.6 million adults lost money 2007 compared with the 3.6 million adults lost money 2007 compared with the 2.3 million in 2006 2.3 million in 2006

• Avg. Loss 2007 = $886 ($1,244 in 2006)Avg. Loss 2007 = $886 ($1,244 in 2006)• New Improved Phish - drops malware that steals user New Improved Phish - drops malware that steals user

credentials & sensitive datacredentials & sensitive data Pay Pal, eBay, electronic greeting cards, Pay Pal, eBay, electronic greeting cards,

charities and foreign businesses. charities and foreign businesses.

IDENTITY THEFTIDENTITY THEFT

• Identity theft involves someone using another Identity theft involves someone using another person’s social security number, signature, credit person’s social security number, signature, credit card, bank account or other information on the card, bank account or other information on the computer or personally.computer or personally.

• Identity theft is prevalent - million or more cases Identity theft is prevalent - million or more cases in U.S. each year.in U.S. each year.

IDENTITY THEFT, cont’dIDENTITY THEFT, cont’d

• Try to avoid Identity Theft by: Try to avoid Identity Theft by: • Not giving out information in response to unsolicited emails (or phone calls)Not giving out information in response to unsolicited emails (or phone calls)• Not downloading unexpected files, even from people you knowNot downloading unexpected files, even from people you know• Controlling access to your computer filesControlling access to your computer files• Using “temporary” account numbers.Using “temporary” account numbers.

• Limit effects by:Limit effects by:• Obtaining insuranceObtaining insurance• Monitoring bank and credit card records.Monitoring bank and credit card records.

• If you’re victimized: ITAC - Identity Theft Assistance Center If you’re victimized: ITAC - Identity Theft Assistance Center • http://www.identitytheftassistance.org/ http://www.identitytheftassistance.org/

ID Theft - CitibankID Theft - Citibank

ID Theft Example - CitibankID Theft Example - Citibank

ID Theft Example – Citizens ID Theft Example – Citizens BankBank

ID Theft Example – Smith ID Theft Example – Smith BarneyBarney

ID Theft Example – RegionsID Theft Example – Regions

ID Theft Example – ID Theft Example – So what if you’re not a So what if you’re not a

member..member..

HOAXESHOAXES

• Hoaxes are come-ons involving scams, Hoaxes are come-ons involving scams, chain letters, or sob stories.chain letters, or sob stories.

• Hoaxes are received from friends and Hoaxes are received from friends and relatives, not just from strangers and relatives, not just from strangers and organizations.organizations.

• Be wary of email previously sent to many Be wary of email previously sent to many people.people.

HOAXES, cont’d.HOAXES, cont’d.

• Check out requests to provide personal or financial information, forward Check out requests to provide personal or financial information, forward the email to others. the email to others.

• Use Internet sites, such as:Use Internet sites, such as:• www.hoaxbusters.ciac.org/www.hoaxbusters.ciac.org/• www.aarp.org/computers-howto/www.aarp.org/computers-howto/• www.linuxsecurity.com/general_article-9323.htmlwww.linuxsecurity.com/general_article-9323.html

Scam Example – Big $$$$$$Scam Example – Big $$$$$$

Scam Example – Easy $$$$Scam Example – Easy $$$$

Scam Example – You Lucky Scam Example – You Lucky Guy!Guy!

Scam Example – You Lucky Scam Example – You Lucky Gal!Gal!

Scam Example – “Hello dear,”Scam Example – “Hello dear,”

RECAPRECAP

• Use of the Internet is not inherently safe.Use of the Internet is not inherently safe.

• You must be constantly aware and take steps to You must be constantly aware and take steps to avoid hazards to your computer and to correct avoid hazards to your computer and to correct problems that arise.problems that arise.

BibliographyBibliography

Lots of great tools and information:

Federal Trade Commissionhttp://www.consumer.gov/idtheft/

Department of Justicehttp://www.usdoj.gov/criminal/fraud/idtheft.html

Federal Reserve Bank of Bostonhttp://www.bos.frb.org/consumer/identity/idtheft.htm

Should I spend $30* FOR A $5 Flash Should I spend $30* FOR A $5 Flash Memory?Memory?* originally $40* originally $40

Or $20.00 for ProtectionOr $20.00 for Protection

Or $0.00 for Protection**Or $0.00 for Protection**** Watch the ADs** Watch the ADs