1. INTERNET, EMAIL, AND SOCIAL MEDIA Information Technology College of Public and Community Service University of Massachusetts at Boston ©2014 William Holmes 1

2. INTERNET ISSUES Type of Connection Virus Protection Spyware Protection Firewall Backing up Privacy and Monitoring 2

3. INTERNET TIPS I Internet Use Cleanup Beware “Phishing” Don’t save passwords Tradeoff : DSL, Cable, T1, WiFi 3

4. INTERNET TIPS II Protect Content Have adequate memory Don’t leave on Beware “wakeups” 4

5. EMAIL ISSUES Differences Among Programs Filters—spam and risky files Viruses and malware Embedded links Deleting and purging email Saving email 5

6. FILE ATTACHMENTS File naming Attachment filters File size Multiple files Downloading files Lost Attachments 6

7. FILE COMPRESSION 1.Zipping and Unzipping 2.Proprietary compression 3.Automatic decompression 4.Can usually be decompressed without keys 5.Variation in decompressability 7

8. FILE ENCRYPTION Converts characters, spaces, and colors to random digits Uses password key Has Public Keys and private keys Can’t be decrypted without keys (usually) 8

9. E-MAIL LISTS Group member lists Userlists from repeat mailings Reply to sender versus all Blind cc allows hidden recipients (including userlist) 9

10. E-MAIL TIPS Insert icons for interest Use small pictures Use saving for retrieval Have multiple e-mail accounts Use Unique Passwords 10

11. E-MAIL SPECIAL ISSUES Openness of e-mail Wireless e-mail Text messaging e-mail Encrypting Away bouncing 11

12. SOCIAL MEDIA Facebook Linkedin Twitter Wikis Instagram, Flickr 12