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Standart #ZenCash blockchain were been hacked


The ZenCash network was the target of a 51% attack on 2 June at approximately 10:43 pm EDT (03 June 02:43 hrs UTC). The ZenCash team immediately executed mitigation procedures to significantly increase the difficulty of future attacks on the network.
Sequence of events:

Received warning of potential attack from one of our pool operators
Immediately initiated investigation and evaluated hash power distribution
In parallel, contacted exchanges to increase confirmation times
Investigation showed that the suspect transaction was a double spend
In progress: Additional forensics and jointly investigating with the affected exchange
A 51% attack or double spend is a major risk for all distributed, public blockchains. All Equihash-based networks are exposed to an influx of new Equihash power and therefore the best short-term mitigation strategy is to recommend that all exchanges increase their minimum required confirmations to at least 100.

At the time of the attack the Zen network hash rate was 58MSol/s. It is possible that the attacker has a private mining operation large enough to conduct the attack and/or supplement with rental hash power. Net hash rate is derived from the last mined block and therefore live hash rate statistics are not available.

The suspect pool address is znkMXdwwxvPp9jNoSjukAbBHjCShQ8ZaLib. Between blocks 318165 and 318275, the attacker(s) caused multiple reorganizations of the blockchain, reverting 38 blocks in the longest reorganization. In block 318204 and 318234 the attacker(s) performed double-spend attacks.

1st Double Spend – 6,600 ZEN

Orphaned transaction
In orphaned block
Double-spend transaction
Included in attacker block

2nd Double Spend – 13,000 ZEN

Orphaned transaction
In orphaned block
Double-spend transaction
Included in attacker block https://explorer.zensystem.io/block/...e55c42df2a3b28

The suspect exchange deposit address is zneDDN3aNebJUnAJ9DoQFys7ZuCKBNRQ115

Increasing required confirmations to 100 makes another attack highly unlikely, however, if you have any specific concerns about the general security of exchange platforms, please contact the exchange directly. As always, we recommend that users store their funds in wallets that they control such as cold storage with something like a Ledger Nano S or paper wallet.

The Zen team will continue monitoring the network and conducting forensic analysis with the affected exchange. All information gathered will be provided to the appropriate authorities.

ZenCash remains committed to ensuring the security of its customers’ funds and recommends that our users contact exchanges directly with any specific security-related questions. ZenCash also remains committed to providing timely customer service to our community and will provide regular updates on the situation as it develops.

@husta5 what you think ? Buying Zen is safe or not ?
its will go up or not ?

Source; https://blog.zencash.com/zencash-sta...-spend-attack/
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Konu Inad tarafından (04.06.2018 Saat 15:25 ) değiştirilmiştir.
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