Category Archives: Security

Adventures with Infrared

I have a thermal imaging camera made by FLIR Systems. These cameras are really interesting devices; they pick up long-wavelength infrared radiation (wavelengths of 8-12μm, versus 380-750nm for visible light). We’ve all seen objects heated until they’re hot enough to glow visibly, but it takes a lot less heat to glow in the infrared spectrum!


Why, you might ask, do I have a thermal camera? Because. That’s why. Actually, there is a reason.

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Desktop System Security Architecture

Over the last few days, Windows users have been hit with yet another email worm. Like many others, this one, the so-called “MyDoom” worm, entices the user to click on a file sent as an email attachment. This mode of attack has been around for a while, though this most recent incarnation is particularly clever; it masquerades as an email system error.

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Online Stock Trading System circa 1997

February 2014: I found these photos of the equipment used in one of my early security consulting projects. This was the gear used to support Europe’s first Internet-accessible stock trading system:


There were two firewalls in this configuration (separating the DMZ from internal and external networks), plus two application processors. All of these were built atop Sun Ultra 1 systems (each one featured a 143 MHz processor, 32M RAM, and a 1GB disk for about $16,000 in 1997 dollars).