How many of you would take your home computer to a public place and leave it running?
Or make a list of every web site you browse (EVERY WEB SITE YOU BROWSE) and publish it in the newspaper?
Would you write your credit card number down on pieces of paper and pass them around large groups of people?
We are engaged in the digital analogs of these things all the time, and most of us don't know it.
How many of you would take your home computer to a public place and leave it?If you fire up a wireless laptop in my house you'll see four of my neighbors' wireless networks, all but one open to the world. I'm about as technical as the sole of an old shoe, but it would be trivial for me to hack into one of their computers and cause all kinds of problems: peek at pictures, read on-line journals, grab credit card numbers or snag on-line passwords stored in cache. Though I'm harmless, some are not. This type of cyber-tom-foolery happens regularly. Thieves drive around looking for wireless networks, discover them, break into them (usually trivially) and make off with the digital rewards.
Or make a list of every web site you browse (EVERY WEB SITE YOU BROWSE) and publish it in the newspaper?If you think only you know the web sites you visit, think again. Your computer stores traces of where you go in cyberspace and, depending on the security settings on your browser, other web sites can get access to that data. Even if you're careful on your computer, the ISP you use to connect to the Internet can store that data. Some of them are even starting to sell that data--in a way that is actually pretty ingenious. Let's say you're up on a web site reading a review of the movie "Bourne Ultimatum." You might notice that the next web site you go to has an ad to rent or buy one of Matt Damon's other movies. This is possible because some ISP's are starting to provide data about the last place you browsed to the next place you browse and charging for that information. Read the privacy notice of your ISP carefully and I imagine that in many cases you'll find that you can't prevent it.
Would you write your credit card number down on pieces of paper and pass them around large groups of people?If you send your credit card number over email or tell someone your credit card over the phone (land-line or cell phone) you might as well be writing it down on little pieces of paper and dropping them off a building roof into a crowd. Technology for "listening" to phone calls and "sniffing" emails on the Internet is basically mainstream. It's easy to rationalize, "Oh, I'll just do it this once," but the first time you find big charges on your credit card that you didn't make, you get serious about protecting yourself.
It's interesting to me that we can be so much more careful about protecting our non-digital assets, when our digital assets can be stolen or undermined so much more quickly.
I'd love to hear what precautions you're taking to protect yourselves.