Fundamental Limits
on Blocking
 Self-Propagating Code

Key Questions

Outline

Background & Terminology

Terminology

Fundamental limits for
optimal reactive defense

Reaction times

Probe rates

Using Internet topology (1)

Using Internet topology (2)

Using Internet topology (3)

Using Internet topology (4)

Breadth of deployment

Global vs. Local protection

Conclusions (Pessimistic/Neutral)

Conclusions (Neutral/Optimistic)