WannaCry vs. Petya: Keys to Ransomware Effectiveness

By Daniel Miessler
With WannaCry and now Petya we’re beginning to see how and why the new strain of ransomware worms are evolving and growing far more effective than previous versions.

I think there are 3 main factors: Propagation, Payload, and Payment.*

Propagation: You ideally want to be able to spread using as many different types of techniques as you can.
Payload: Once you’ve infected the