I am trying to understand impact of crypto currency. Sorry for my ignorance, and or impertinence. 1. Is it possible to run such large scale ransom demands without cryptocurrency? 2. Do we know if the attacker is using a single BTC wallet, or if ransoms are being collected in a distributed fashion. 3. Is it possible for BTC n/w to hijack BTCs going to the ransom wallet(s). That is to say collectively overwrite/override the transactions and may be reroute the coins to some non-profit wallet? I know it will be a very bad precedent, but I am trying to understand if it is technically possible.