For information about Internet censorship, visit the following site and read Frequently Asked Questions about censorship on the World Wide Web and the Communications Decency Act (CDA).The Internet Censorship FAQ
Additional information can be found at Censorship on the Internet.
Two major Internet security issues are privacy and authenticity. Email communication passes through several systems and gateways in its journey from sender to recipient. Theoretically, anyone with the the right level of access and technical expertise could read an email message without either sender or recipient ever knowing their email had been intercepted.
Usually email or Usenet messages contain the email address of the person who sent the missive. Unfortunately, other people's email addresses can be forged.
Some precautions you can take include:
The questions raised by the use of Internet resources are typical of what we need to be aware of and concerned about as more information becomes readily available through the use of computers, networks and other technologies. We need to think about and act on the ramifications of making this type of information (phone numbers, email addresses, home addresses, etc.) so easily accessible.
Legal and Ethical Internet Resources
Electronic Privacy Information Center
The Electronic Frontier Foundation
eTRUST: Building Trust and Confidence in Electronic Transactions
Encryption Policy Resource Page