Wow. That's really scary! I also hope that it will not be a new trend for criminals.
I think that it is practically possible to introduce a delay, but it is probably very impractical for a transaction that you desperately wants to do (An advantage of BTC is the speed of transactions.). In addition, criminals could then force their victim to turn off the security measure (if it should be a security measure that needs to be activated).
So we would be back at the beginning. Of course, I agree with you that more safety measures should be introduced.