Chapter 9, Exercise 1
Using 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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