Bryce “Baby I got your money” Weiner

All PoS coins are prone to (percentage higher than currently staking coins) attacks. That percentage can often be stupidly low.

Which is why the total number of successful PoS network attacks for all of the hundreds of PoS networks is a grand total of zero.

It's still not trivial to pull off even if the marginal cost might not be high - nicehash doesn't exist in PoS.

EOS was engineered to have a 10% attack. Other PoS networks are not. Honestly this nonsense about PoS network insecurity is silly. If it were true we’d be getting attacked every moment of every day.

Let’s say you have a PoS network with 100 tokens and 90 of them are on an exchange and 10 of them are “out” for staking. 6 of them are actually staking and I own 4 of them. I cannot attack the network even though I have majority weight.

Consider that 20 are out of exchanges, 6 are actually staking. I own 7 that are *not* staking. I can attack the network, or indeed sell my coins, and use those keys to attack the network.

The reason is that there’s nothing to attack. You can “selfish mine” but who cares since you have a majority of weight. Those are your blocks anyway. There’s a meatspace vector required of convincing an exchange to run your software.

In that instance it’s simply a hostile takeover by a new party. If one wishes to exert that much cost and effort to take over a network to destroy it well shit you earned it fair and square. That’s crypto.