This is science fiction, not anything that is even remotely close to a possibility within the foreseeable future.
to actually address your comment: that simply isn't true.
WRT:
Viruses: you can mail order printed DNA strands right now if you want to. maybe they won't or can't print specific things like viruses for now, but technology advances and blackmail has been around for a very very long time.
Military Comms: blackmail is going nowhere
Crash the stock market: already happened in 2010
Change records: blackmail once again.
Kill bots: kill bots already exist and if a factory doesn't want to make them for you, blackmail the owner