Towards the end kushti talks about releasing a test chain and tools to attack it with, as well as another paper with some mitigation strategies, but afaics none of those were ever released. I don't think that thread disproves anything, but OK, carry on staking.
jonald_fyookball says he doesn't have the time and energy to digest Kushti's research paper. He's honest about it, he didn't read it.
Towards the end and towards the beginning Kushti's conclusion is the same: long-range attack is not possible.
Short-range is theoretically possible with 10% of all coins for 20 blocks - 20 minutes for full confirmation of the transaction is recommended. Bitcoin recommends 6 confirmations (60 minutes) to protect against short-range attacks. But OK, carry on FUD'ing.
Not trying to drag thread off topic, but where is the experimental blockchain and attack tools that were supposed to be released to demonstrate this practice. Where is the formalized paper?
Another problem is that many (all?) PoS coins suffer from poor distribution, so it's possible one entity owns more than 10% of all coins. Didn't Bter hacker steal like 10% of all NXT? Satoshi might own 10% of all Bitcoin but that doesn't mean he can attack the chain with a single i7 cpu.
As an aside, is the word 'FUD' the crypto equivalent of sticking your fingers in your ears and yelling, "lalalalala"?
Did you check the github?
The tools:
https://github.com/ConsensusResearch/MultiBranch
https://github.com/ConsensusResearch/ForgingSimulation
Would you like an .exe file with a big red button "LAUNCH ATTACK" on it?
10% of NXT is 100 million coins. Last time I checked the hacker got away with 8 million coins. FUD'ing is not checking facts or twisting them in your favor.
