Optimal Timing Selection Approach to Moving Target Defense: A FlipIt Attack-Defense Game Model

Algorithm 1

FG-MTD game optimal timing selection algorithm.

	Input FG-MTD Model
	Output Optimal Timing
	BEGIN
	Initialize
	// Initialize MTD optimal timing selection model FG-MTD
	Initialize,
	// Initialize the action space for attack–defense players
	Initialize,
	// Initialize the defender time period strategies space
	Initialize,
	// Initialize the defender time period strategies space based on historical attack data
	For
	For
	{
	If
	Calculate
	Else
	Calculate
	}
	// Traverse each type of attack and calculate the attack–defense strategy combination utility
	Output
// Output optimal timing
	END