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Wild fridays and very interesting considerations about security
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Hello world.. this is more like a "transcript of a couple of interesting facts" I learnt yesterday. Which builds up on some concepts I've exposed around here. We had a couple of drinks (~cough, apologies to those who might have been offended by part of the result, we had way too many drinks actually, and I came back here for posting right after) with two top notch consultants. One currently is a colleague, the other a former colleague, working in the field of security. Read -large scale security, thousands of user accounts and org. units in his current assignment. ---------------------------------------------------------------------------------------- On the human immune system: - a newborn baby has all the possible defenses againts all diseases that exist (read: everything, AIDS even under all it's forms), or COULD possibly exist. Ask a Doctor or a biologist (well, this is a huge simplification but that's how it works). - how comes we actually do catch diseases in spite of that? Because, as adults, we only keep an extremely small amount of each one of those defenses. When a virus or bacteria are invading, the immune system finds the right counter-measure, and duplicates it in quantities that will actually remove the intruder. So a good immune reaction depends on the time the body takes to react. ...and that's why AIDS works in the first place: because during the time the body takes to react, the immune system becomes too weak to react. Sucks. Why the hell would the body keep only such small amounts of defenses during an adult life then? Wouldn't it be easier to keep lots? The answer is ca-pa-city. ---------------------------------------------------------------------------------------- How does this relate to comps? Well... :) Picture a -reeeeaaaally- large network. It has an antivirus, and a solid one, updated regularly and all. At some point, the antivirus contains so many virus definitions that comparing them to all the files on a system... just takes too long. So long it doesn't make sense anymore to use an antivirus: you'd be using your comp JUST to run the antivirus 24/7. So antivirii tend to release really old virus definitions. Read that ten times: antiviriis drop out viriis that are older than two or three years. ...For my friend, this resulted in a old and weak virus impacting loads of users and crashing part of a network... because the antivirus considered it an "old" threat :) Go figure. I found the example and story very interesting, thought I would share.
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