- The newly created Bitcoin Cash ABC is under a DoS attack.
- The attack originated from an unknown miner which has been mining empty blocks for more than a week.
Share this article
Bitcoin Cash ABC (BCHA), the result of the recent Bitcoin Cash (BCH) hard fork, has witnessed an attack where a single miner is disrupting the network.
Bitcoin Cash Fork Under Attack
Experts are calling it a denial of service (DoS) attack aimed at disrupting the blockchain.
The attack originated from an unknown mining entity that has been mining empty blocks on the Bitcoin Cash ABC chain for more than a week.
An empty block only contains the block reward transaction (as seen above), and all other transactions are excluded, hampering the network to function normally.
The incident was first reported by Nikita Zhavoronkov, the lead developer at Blockchair, who said it is clearly malicious behavior.
I don’t wain to rain on the Bitcoin ABC’s parade, but my prediction was correct — the chain just got DoS attacked. There are 200k transactions in the mempool waiting to be confirmed, and someone mined 11 empty blocks — it is clearly malicious behaviour. pic.twitter.com/xhp73f3c0w
— Nikita Zhavoronkov (@nikzh) November 21, 2020
The intention behind the attack is still unknown. Adding to the mystery, the attacker also broadcasted a message which warned of an upcoming “bcha dump” on Nov. 25.
Low Hash Rate, Few Miners Led to the Attack
On Nov. 15, a Bitcoin Cash (BCH) blockchain fork took place, resulting in a new blockchain called Bitcoin Cash ABC (BCHA). After the BCHA chain went live, only a few mining pools were active, resulting in a low network hashrate.
At press time, BCHA’s hashrate is 0.12 Eh/s, which is less than 1/10th compared to BCH’s hashrate of 1.7 Eh/s. According to Zhavoronkov, the low hashrate may have allowed a single mining group to control the network.
“Mystery Miners:” Is Bitcoin Cash Under Threat?
Earlier today, sharp-eyed observers noticed something strange happening on the BCH blockchain. More than half of Bitcoin Cash’s (BCH) hash power appears to be controlled by unknown miners, who are…
Bitcoin Cash Hard Fork Complete, Battle for Dominant Chain Begins
The Bitcoin Cash hard fork to two separate chains—BCHN and BCHABC—is complete, and the support from miners is split 60% and 37% among the two competing sides. Unlike common voting,…
Bitcoin Cash Holders Dump Millions Ahead of Hard Fork
Bitcoin Cash holders rushed to exchanges this week, transferring more than $250 million to trading platforms ahead of the disputed hard fork. Support from BCH nodes is split between 40%…