The Spy on Your Desk

Once upon a time, when you needed to deposit money in your checking account, you visited the bank. If you were hungry for something new to read, you went to the bookstore. When you purchased music or rented a movie it came home on a shiny silver disc. Had a medical question? You called your doctor or pulled a book off a shelf. When you wanted to have a private conversation with a friend, you called them on the phone or sent a letter.

Today, you may be doing all of the above online. It's incredibly convenient and often cheaper. But the threat to your privacy increases exponentially.

All of a sudden, your personal finances, the books you bought at Amazon, the music and video files you downloaded, the medical web sites you visited, the search terms you typed into Google or Yahoo, your email and instant message conversations all are concentrated in a single point of entry: your computer.

A computer is a secretary who jots everything down, takes perfect notes, and never forgets a thing until you tell it to (or the hard disk crashes). Unless you've taken steps to protect yourself and most people don't anyone with rudimentary computer skills can sit at your keyboard and learn everything about you in just a few minutes. They can look at your browser history or your cookie files, scan your document folders, peek inside your personal finance software, and so on. They can build a highly detailed dossier of your hobbies and interests, your physical ailments, your fiscal health, and any naughtiness you may have been up to. No hacking required.

This also includes any law enforcement agencies, divorce attorneys, and possibly your boss anyone with an adversarial interest and/or the legal right to impound your computer can see what you've been up to.

Oh, and those files you deleted? They're still there (see Figure 1-1). Unless you're very careful and know precisely what to do, anything that's been "deleted" can be retrieved fairly easily. (For tips on how to secure your PC, see Chapter 2.)

annoyances 1-1. Windows' aptly named Recycle Bin is just one of the places where "deleted" files may be lurking and can be revived with a few clicks.