This journal has covered numerous emerging technologies since we started publishing in June 1998. It would be an interesting excercise to look at which of these technologies have been successfully deployed, which ones have been rejected, and which ones are still emerging or slowly being deployed. In this issue we examine another emerging technology, or perhaps "a new concept" would be a better term, because a collection of new and old technologies are coming together to form what is collectively known as Cloud Computing. In a two-part article on cloud computing, T. Sridhar gives an overview of the concepts underlying this area of development. Part 1 of the article is subtitled "Models and Technologies." It will be followed by Part 2: "Infrastructure and Implementation Topics," which will be published in our next issue.
In the last year, I have had one of my credit cards "compromised" (unauthorized charges posted to the account) and subsequently replaced twice. This situation is always annoying and worrisome. Most likely, these breaches resulted from the card information being captured through an online purchase transaction. I am sure I will never know the full story, and luckily the credit card companies are pretty good about detecting fraudulent charges and quickly resolving the matter. When you start thinking about the number of network and server elements involved in a typical e-commerce transaction, it isn't entirely surprising that someone with criminal intentions could exploit a weakness in the overall system. Our second article, by Michael Behringer, explores the topic of "end-to-end security" in more detail.
Those of you who have been subscribers to this journal for several years have probably noticed that your subscription has been "auto-renewed" once a year without requiring any renewal action on your part. Starting with the December 2009 issue, we will no longer extend your subscription when it expires unless you renew it by visiting the IPJ "Subscriber Services" webpage. You will need to use your e-mail address and Subscription ID in order to gain access to your record, where you can renew, update your delivery address, or change delivery method. IPJ is available on paper, as well as online in both HTML and PDF formats. You can also contact us at email@example.com regarding your renewal. The expiration date and Subscription ID are printed on the back of the journal for subscribers in the United States, and on the envelope for our international subscribers. We believe that this new renewal policy will result in fewer undeliverable or unwanted copies being mailed out—a plus for the environment.
—Ole J. Jacobsen, Editor and Publisher