Database System Concepts
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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Assume a year has passed and XYZ has improved its security.  Using the following table, calculate the SLE, ARO, and ALE for each threat category listed.

YXZ Software Company (Asset Value: $1,200,000

Threat Category

Cost per Incident

Frequency of Occurrence

Cost of Controls

Type of Control

Programmer mistakes

$5,000

1 per month

$20,000

Training

Loss of intellectual property

$75,000

1 per 2 years

$15,000

Firewall/IDS

Software piracy

$500

1 per month

$30,000

Firewall/IDS

Theft of information (hacker)

$2,500

1 per 6 months

$15,000

Firewall/IDS

Threat of information (employees)

$5,00

1 per year

$15,000

Physical security

Web defacement

$500

1 per quarter

$10,000

Firewall

Theft of equipment

$5,000

1 per 2 years

$15,000

Physical security

Viruses, worms, Trojan horses

$1,500

1 per month

$15,000

Antivirus

Denial-of-service attack

$2,500

1 per 6 months

$10,000

Firewall

Earthquake

$250,000

1 per 20 years

$5,000

Insurance/backups

Flood

$50,000

1 per 10 years

$10,000

Insurance/backups

Fire

$100,000

1 per 10 years

$10,000

Insurance/backups

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