Crypto-Gram is a "free monthly newsletter providing summaries, analyses, insights, and commentaries on security: computer and otherwise." It is published on the fifteenth of every month by the founder of a network security company. Several 2003 issues have focused on cyber-terrorism, the risks it poses, and possible defenses from it. The articles also provide perspective -- for example, the author...

Is my network secure? Are there holes in our security? If you're directly or indirectly responsible for maintaining computers connected to the Internet, those are questions you've probably asked yourself from time to time. Unfortunately, certain answers are difficult to come by, considering the rapid rate at which networks and operating systems are evolving and the staggering complexity of some of...