(updated) Hello recently the infamous 51% Attack has become all too common. Before, it was just a theoretical possibility. But since it happened to verge and the price did not drop to zero afterwards,

So on news.bitcoin.com today AND on Ivan on Tech we see everyone talking about the 51% attack Double Spend potential of attacking a chain by having MORE hashing power and the LONGEST chain wins and so

It seems that proof-of-work (PoW), the consensus protocol behind Bitcoin, isn’t ideal for smaller cryptocurrencies, because they’re far more vulnerable to what are called 51 percent attacks. At least five

최근 들어 51% 공격을 당하는 PoW들이 늘어나고 있습니다. 때마침 이런 것을 분석한 논문이 있어서 간단하게 공유하고자 합니다. 복잡한 분석은 아니고 과거에 페북에서 이야기를 했듯이 시작한지 얼마되지 않은 PoW에 대한 51% 공격을 하기 위한 복잡도는 매우 낮다는 설명을 하고 있습니다. 우리나라에도 PoW 기반 Coin들이 많이 나오고 있는데 걱정이네요.