Bitcoin in Brief Monday: Zencash Targeted in 51% Attack, Ticketfly Hijacked for Ransom

In today’s Bitcoin in Brief – Zencash has lost $550,000 in two double-spend transactions following a 51% attack on the network. Developers have taken measures to increase the difficulty of future attacks. The event-ticketing platform Ticketfly is also trying to recover from a hijack. 26 million accounts have been reportedly compromised by a hacker who … Read more

Proof of Work Coins on High Alert Following Spate of 51% Attacks

First it happened to verge. $1.8m of cryptocurrency swiped in a matter of hours. Then to bitcoin gold, plundered in an $18m double spend attack. Then to verge again, this time to the tune of $1.7 million. Along the way, monacoin is also believed to have been hit. Someone is methodically working their way through … Read more

Bitcoin Gold Hacked for $18 Million

It appears Bitcoin Gold (BTG) has been double spend attacked over and over again, totalling something in the neighborhood of $18 million at current prices. BTG forums seem to have been tracking the hack, going as far back as last week, monitoring the controversial coin’s hashrate, ultimately determining a 51% attack was under way. Also … Read more

Verge Struck by Second PoW Attack in as Many Months

Accident-prone altcoin verge has been crippled by yet another mining attack. A little over a month after being subjected to a 51% attack, the network is once again at the mercy of a malevolent attacker who is rejecting blocks and profiting handsomely off the carnage caused. The repeat attack illustrates the risks faced by low … Read more

One Entity Currently Controls Most of the Vertcoin Mining Hashpower

A lot of interesting things are happening in the world of cryptocurrency, but some trends are less than positive. The Vertcoin mining situation, for example, doesn’t look all that promising as of right now. With one pool controlling a large amount of the network’s hashrate, there is genuine reason for concern. Vertcoin Faces a Potential … Read more

A 51% Attack on Bitcoin Means Mutually Assured Destruction

What would happen if bitcoin were to suffer a 51% attack? It’s a hypothetical question, but one that has troubled some of the community’s brightest minds. Just as army generals play out countless war games, enacting doomsday scenarios, bitcoin defenders like to ponder ways in which the decentralized cryptocurrency could be attacked and brought to … Read more

Verge Is Forced to Fork After Suffering a 51% Attack

Verge, a ”privacy coin” famed for the zealotry of its community, has fallen prey to a 51% attack. A malevolent miner gained majority control of the network hashrate, a feat that makes it possible for the controlling entity to modify transactions, calling the integrity of the entire blockchain into question. Around 250,000 verge were stolen … Read more