In our most recent issue, Scott Berinato dug up some expert opinions about how we could fix Internet security. Among the options was the concept of "disposable" computing\u2014basically a system with two processors, one of which could be wiped clean after every secure transaction.It sounds like hardware overkill to me, but there\u2019s another option that would work with today\u2019s hardware\u2014the live CD.Live CDs, such as those built on the Knoppix Linux distribution, could someday revolutionize Internet security\u2014though perhaps at a serious cost to personal computing freedom.The idea is a bootable CD-ROM that takes users immediately to a secure, unchangeable operating environment tailored to a specific task where security is a priority. For instance, you could do what Australian firm Cybersource recently did and build a CD that booted to a banking interface. A user boots up, performs their transaction, and logs off before returning to their day-to-day work environment. It doesn\u2019t matter if the hard drive is a seething morass of every virus, Trojan and keystroke logger available\u2014the transaction remains secure. The concept certainly isn\u2019t new: Knoppix has has been around for years as a platform for building Linux demo CDs, for instance. You let a potential customer play around with your product for a while on the CD, then they just shut it down, remove the CD, and get back to work without all those tiresome\u2014and risky\u2014uninstall procedures. It gets even more interesting\u2014and a tad scary\u2014when you start extrapolating. In an upcoming feature in CIO, Christopher Koch takes a look at a tool that lets companies create completely controlled development environments on CD-ROM and deliver them to offshore programming groups. When the project\u2019s over, the CDs expire, and secure access is virtually guaranteed. (Just so you don\u2019t think me too naive, I\u2019m aware that if these things become popular, a legion of Linux hackers will begin probing the systems for weaknesses.)Now go a step further and imagine a world where your company, or even your Internet service provider, requires the same thing of you. If you want access, you\u2019ll do it from the supplied CD. All data will be stored on central servers. No malware. No unsupported applications. Just uniformity and security across the board. I\u2019m not saying I\u2019d be happy in such a world, but I know some IT folks who would sleep a lot better at night.