if anyone can control 51% he will control the bitcoin network
no need to be stealthy about it, they can just not include any transactions in their blocks and reject blocks mined by others
but this wont be profitable
what they can do is set the transaction fee to whatever they want , since only they can add new transactions to the chain
Edit: what lock in points? the longest chain wins.
Topic: stealth 51% attack - page 2. (Read 2220 times)
Thats why they have lock in points so you cant rewrite things.
If someone had a 51% hashrate, what would stop them from solving blocks but not actually publishing the answers?
In this way, they could create a fork of the blockchain which would be longer than the real published one, and obviously they could
publish this fork whenever -- thereby re-writing the existing blockchain, which could be many blocks long.
You wouldn't know about this until it happened, and it could be very damaging -- Imagine if the last 200 blocks were suddenly re-written...
Is there a way of mitigating against a stealth attack like this ?
In this way, they could create a fork of the blockchain which would be longer than the real published one, and obviously they could
publish this fork whenever -- thereby re-writing the existing blockchain, which could be many blocks long.
You wouldn't know about this until it happened, and it could be very damaging -- Imagine if the last 200 blocks were suddenly re-written...
Is there a way of mitigating against a stealth attack like this ?
Jump to: