I am also not a security expert, but it seems like VM's that are shared in the cloud are the targets for a lot of these types of attacks. You don't need to pwn

I am also not a security expert, but it seems like VM's that are shared in the cloud are the targets for a lot of these types of attacks. You don't need to pwn the other VM, but you don't exactly get to choose which VM's you cohabitate with to target your attacks.