suppose a company "x' sells laptops online and has suffered many DOS attack. the company makes an average $20000 profit per week and a typical DOS attack lowers sales by 40%. the company suffers four Dos attacks on average of 6 months a dos mitigation service is available for a Subscribtion fee of $1000 per month with $1500 for one time installation. The company x has tested this service and believes the number of attackes will be reduced 80%.

a) Calculate SLE, ARO, ALE Before implementing countermeasure.

B) Calculate ALE after the countermeasure

C) Calculate Cost Benefit Analysis of the Dos mitigation Service as good investment or not.