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Bitcoin SV Faces a 51% Attack

News
Bitcoin SV Faces a 51% Attack

According to reports from CoinMetrics, BSV suffered a 51% attack on Tuesday morning. As initially reported, the attack is the fifth one on the network since the end of June and has resulted in three versions of the chain’s simultaneous mining. 

Understanding 51% Attack

The firm Further reported that all Bitcoin SV FARUM nodes recorded “a deep reorg with a max depth of 14 blocks”. Although there haven’t been any more reorganization reports, synchronization conflicts have been happening on major mining pools in the past.

A 51% refers to malicious attacks on a blockchain where a group of miners gains control of more than 50% of the hash power, otherwise known as the hash rate.

After gaining this power, the attackers can block new transactions from gaining confirmations. As a result, they halt payments between some or all users. The attackers can also reverse transactions completed while they control the network, which means the attackers could double-spend the involved coins.

The Aftermath of BSV Attack

According to the Bitcoin Association, the damage of this attack is unclear. The association noted that BSV transactions have been double-spent, although there is no evidence as for no. Therefore, it seems that the attackers have been double-spending their transactions.

Currently, there is no “victim” of the double-spends since no one has come forward. It appears that the attackers meant to cause havoc but not to gain profit from the attack. The Bitcoin Association also noted that no one had incurred any losses, and the attack has not happened since 9 July 2021.

The association stated that it does not tolerate such attacks, and it is investigating the recent ones. According to them, the Bitcoin SV Infrastructure Team has identified the following address: (1G47mSr3oANXMafVrR8UC4pzV7FEAzo3r9) connected to the attack.

Other Attacks 

Such attacks pose a severe threat to proof-of-work blockchains which include Bitcoin and Ethereum networks. For instance, in August 2020, Ethereum Classic experienced several 51% attacks. The attacks led to the disruption of more than 10,000 blocks, which cost losses worth millions of dollars. 

Besides, the attack was a significant blow to the reputation of Ethereum because many believed it was immutable and couldn’t be hacked. 

In another report, 51% of attacks occurred on Privacy Coin GRIN in November 2020. As a result of those attacks, Huobi and OKEx suspended BSV trading options. 

It seems the recent attack will cause another suspension or more security measures.