ACEIZE Tracking the current state of Science and Technology

The Electronic Frontier Foundation or EFF has compiled a useful guide on how to protect yourself and your data from eavesdropping.

Here's their description of the Surveillance Self-Defense project:

The Electronic Frontier Foundation (EFF) has created this Surveillance Self-Defense site to educate the American public about the law and technology of government surveillance in the United States, providing the information and tools necessary to evaluate the threat of surveillance and take appropriate steps to defend against it.

Surveillance Self-Defense (SSD) exists to answer two main questions: What can the government legally do to spy on your computer data and communications? And what can you legally do to protect yourself against such spying?