You have probably heard about the 51% attack on proof-of-work chains, like Bitcoin. Here I'm going to explain the attack vector from miners on the bitcoin network, and why most people way overestimate

Recently, Bitcoin SV (Satoshi Vision) has suffered yet another %51 attack on it's blockchain, which has caused the birth of multiple malicious sidechains, orphaned the genuine chain and it's trustworthy

Chinese security firm SlowMist said it could soon locate the initiators of the recent 51% attacks on Ethereum Classic (ETC). In an article on Medium of January 9, SlowMist points to three wallet addresses

Attention: It's possible to sell a card and then still keep it! Money for nothing and a shark for free! Now for the click-bait disclaimer: I don't actually know how to do this. But it does happen. Now

Refere-se a um cenário em que alguém tenta enviar uma transação para dois destinatários diferentes ao mesmo tempo. No entanto, uma vez confirmada uma transação, torna-se quase impossível duplicá-la. Quanto

SlowMist, a Chinese cyber security firm has recently pointed out a transaction that should have some worried, as the user managed to double-spend the value of 694 USDT. SlowMist: User On Thursday, a blockchain

This is a message from Rob Viglione ZenCash Co-founder and Team Lead Zen was hit by a double spend, or 51% attack, this last weekend. Criminals were able to get away with just over 23,000 ZEN from an exchange.

Developers of Ethereum, the world's No. 2 digital currency by market capitalization, have closed a serious security hole that allowed virtually anyone with an Internet connection to manipulate individual

"Double-spending" Bitcoin -- the process of making someone believe you sent them funds when you didn't -- used to be only for the tech-savvy. Thanks to Glass Hunt's new web-based double-spend...

I know the exchanges are down for sending steem and sbd! I really need to cash in today to get a new belt, pay my phonebill and get a vaporiser so I can quit smoking!! The only thing is I got a funny message

About two weeks ago I posted about a weird pump happening on the HTML5 markets. TL;DR: There was a successful doublespend attack and the coin gained 1000% just upon the promise of a fix from the developers.

Just a few days ago HTML5 coin experienced a 51% attack, the attack apparently was almost successful. @joshuaatiemo reported about it at the time. HTML5 Coin has been trading at the single satoshi forever.

The team at Bleutrade.com exchange has been able to prevent a 51% attack on the popular crypto HTML5coin. This action by the exchanges is very encouraging. The developers are working on a fix as funds

It finally happened, someone managed to successfully doublesped almost 80,000 QuatlooCoin on @Bittrex Exchange. From my point of view, the coin is officially DEAD until the damn shitcoin is replaced with