* Users not in the ACTIVE witness set should not have to worry about their
* key getting compromised and being used to produced multiple blocks so
* the attacker can report it and steel their vesting steem.
*
* The result of the operation is to transfer the full VESTING STEEM balance
* of the block producer to the reporter.
Does it mean the users who ARE in the active witness set,
should worry about their key getting compromised and being used to double-produce blocks, so all their VESTING STEEM balance could be transferred to the malicious reporter? I mean is such kind of attack still possible?