Back Doors Always Become Open Doors

We know back doors get built into systems because sooner or later they’re abused in ways that often grab our attention. Keep in mind that any “password recovery” system accomplishes something that would not be possible within a system that really protects confidentiality. There is a tradeoff between confidentiality and availability. The stronger the protection […]
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Encryption is “Exponentially Easier” to Break, But What Does That Really Mean?

In Learning Tree’s System and Network Security Introduction course we talk a little about risk management. Unless you can put numbers on a thing, it’s hard to discuss it or plan for it (or plan how to avoid it!) in a meaningful way. A startling result from late summer is still getting some attention. It’s […]
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