Chapter 9, Exercise 1
skyngeUsing the following table, calculate the SLE, ARO, and ALE for each threat category listed:
XYZ Software Company, major threat categories for new applications development | Cost per Incident | Frequency of Occurrence | SLE | ARO | ALE |
Programmer mistakes | $5,000 | 1 per week | 5,000 | 52.0 | $ 260,000 |
Loss of intellectual property | $75,000 | 1 per year | 75,000 | 1.0 | $ 75,000 |
Software piracy | $500 | 1 per week | 500 | 52.0 | $ 26,000 |
Theft of information (hacker) | $2,500 | 1 per quarter | 2,500 | 4.0 | $ 10,000 |
Theft of information (employee) | $5,000 | 1 per 6 months | 5,000 | 2.0 | $ 10,000 |
Web defacement | $500 | 1 per month | 500 | 12.0 | $ 6,000 |
Theft of equipment | $5,000 | 1 per year | 5,000 | 1.0 | $ 5,000 |
Virus, worms, Trojan horses | $1,500 | 1 per week | 1,500 | 52.0 | $ 78,000 |
Denial-of-service attacks | $2,500 | 1 per quarter | 2,500 | 4.0 | $ 10,000 |
Earthquake | $250,000 | 1 per 20 years | 250,000 | 0.1 | $ 12,500 |
Flood | $250,000 | 1 per 10 years | 250,000 | 0.1 | $ 25,000 |
Fire | $500,000 | 1 per 10 years | 500,000 | 0.1 | $ 50,000 |
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