Thursday, 17 May 2012
The CIA Triad: Are all your bits in one basket?
The CIA Triad: Are all your bits in one basket?
By Richard Moss | Dec 23, 2008 | 3181 reads
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Security professionals often focus on the “C” in the CIA Triad of Security but yet another major break on the sub sea cable systems emphasizes the need for a balanced approach and an appropriate emphasis on the “A” in the availability of business services!
The cable cut this time is on the route between Europe, the Middle East and Asia Pacific and has brought disruption to telephone services and internet communications, caused by cuts in not one but three underwater cables beneath the Mediterranean Sea impacting the FLAG FEA, SMW4, and SMW3 lines. Service disruption in Asia looks to be minimal this time but we are approaching the 2nd anniversary of an undersea earthquake off the coast of Taiwan on December the 26th 2006 which brutally disrupted communications across East Asia by damaging similar sub-sea cables. The cable break then took out 98% of communication for Malaysia, Singapore, Thailand and Hong Kong with repairs taking over a month to complete.
This type of disruption brings organizations to a halt and costs millions of dollars with many – particularly in the financial services industry or commodities trading industry - grinding to a halt in a very short space of time so they often measure and optimize the speed at which they get live data feeds to tens of milliseconds of performance.
Yet IT and purchasing departments often buy communication networks on price, price and, err, well, price to be honest … but not all service providers and networks are the same and this is where security professionals need to step in and provide advice and input to the purchasing and selection process to ensure that any penny-pinching procurement policies are business-appropriate and don’t cost millions through later service disruptions such as these and … that services providers who are less-than honest when it comes to the reliance built within their network topology don’t lose your company millions when problems in their networks do occur!
Think of it this way: the difference between a Tier 1 and tier 4 datacenter can be articulated in terms of availability or annual downtime of that asset with roughly a Tier 1 DC down for 28 hours per year while a Tier 4 is allowed less than half of one hour outage in the same period. Unfortunately there’s nothing analogous for communication networks except the standard SLA, which in reality is nothing better than your average holiday travel insurance i.e. if you lose something you get token damages – so if the network’s not available here’s a few dollars compensation (normally calculated in 1/x of what you pay the service provider in the first place so your not being compensated for the business your company is losing!)
And with today’s bandwidth hungry and latency intolerant applications being business critical, it’s no good when the link to London or Singapore is cut trying to cram all the traffic down an alternative pipe – 2 into 1 just does not go! Well, alright it does … if you stuff all those bits hard enough you can make them fit, they just have to travel a lot slower!
I can tell you from experience: when one of the cross-harbor tunnels in Hong Kong is unavailable the traffic in the remaining 2 flows less well when you try and stuff all the cars, trucks, busses and mopeds down the other two …! Enough analogies for one blog?
So not to labor a point – the C.I.A. Triad must, must, must have a balanced approach especially when the availability of applications and business critical services is outsourced to 3rd part service providers; So, take care as you have been warned twice now, and both times at Christmas, so have a happy one if you are celebrating!
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when one of the cross-harbor tunnels in Hong Kong is unavailable the traffic in the remaining 2 flows less well when you try and stuff all the cars, trucks, busses and mopeds down the other two …!
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