Bruce Schneier is always fun, and together with Markus Ranum he is extra fun (sidenote: although it is title “face-off”, they agree more than they disagree):

• Schneier-Ranum face-off, part1: The future of information security
• Schneier-Ranum face-off, part 2: Social networking
• Schneier-Ranum face-off, part 3: Compliance and security
• Schneier-Ranum face-off, part ...

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