Parameter

Symbol

Example values

Business model

Asset value

a

1 000

Time in years

t

Return

r

5.0%

Attacker

Number of threats

n

25

Loss given attack

z

2.5%

Expected minimum attack cost

15

Gradient of attack cost

1

Level of uncertainty

Defense

Cost of each individual defense

1

1 (unit definition)

Defense interdependence

0.1

Unrecoverable costs

0