Castle versus Cannon: It’s time to rethink security

16 November 2015 | Comments Off on Castle versus Cannon: It’s time to rethink security

In case you’re confused about the modern state of security, let me give you a short lesson. Your network is pictured to the left. When I first started working on networks in the USAF we were just starting to build well designed DMZs, sort of a gate system for the modern network. “Firewalls” (a term…

Information wants to be protected: Security as a mindset

14 September 2015 |

I was teaching a class last week and mentioned something about privacy to the students. One of them shot back, “you’re paranoid.” And again, at a meeting with some folks about missionaries, and how best to protect them when trouble comes to their door, I was again declared paranoid. In fact, I’ve been told I’m…

Understanding Rowhammer

31 July 2015 | Comments Off on Understanding Rowhammer

As I learned in my early days in electronics, every wire is an antenna. This means that a signal in any wire, given enough power, can be transmitted, and that same signal, in an adjacent wire, can be received (and potentially decoded) through electromagnetic induction (Rule 3 may apply). This is a major problem in…