ZenCash to to undergo a hard fork

ZenCash will initiate a hard fork on June 26 as a response to a production of the Bitmain AntMiner Z9 Equihash ASIC miner
29 May 2018   3269

As the shipping of the Bitmain AntMiner Z9 Equihash ASIC miner is scheduled for the late June 2018, the ZenCash community is concerned. The concern is that on top of being 12x more energy efficient, the miner specifically focuses on Equihash - ZenCash hashing algorithm. As Bitmain develops more powerful miners, it may get able to maintain more than 50% of the mining hashrate and decide whether to allow ZenCash blockchain to be upgraded or not.

The counter-measure is to change the hashing algorithm from Equihash to Equihash-144-5. This will result in a hard fork. The mandatory software update is scheduled for June 26. A 10-point checklist was prepared to outline the upgrade. More details can be found here.
At the moment of publication, ZenCash market indicators are as follows:

Average price 28.17 USD
Market cap 111,115,862 USD
Volume (24H) 2,887,830 USD

Potentional Vulnerabilities Found in ETH 2.0

Least Authority have found potentional security issues in the network P2P interaction and block proposal system
26 March 2020   964

Technology security firm Least Authority, at the request of the Ethereum Foundation, conducted an audit of the Ethereum 2.0 specifications and identified several potential vulnerabilities at once.

Least Authority said that developers need to solve problems with vulnerabilities in the network layer of peer-to-peer (P2P) interaction, as well as in the block proposal system. At the same time, the auditor noted that the specifications are "very well thought out and competent."

However, at the moment there is no large ecosystem based on PoS and using sharding in the world, so it is impossible to accurately assess the prospects for system stability.
Also, information security experts emphasized that the specifications did not pay enough attention to the description of the P2P network level and the system of records about Ethereum nodes. Vulnerability risks are also observed in the block proposal system and the messaging system between nodes.

Experts said that in the blockchains running on PoS, the choice of a new block is simple and no one can predict who will get the new block. In PoS systems, it is the block proposal system that decides whose block will fall into the blockchain, and this leads to the risk of data leakage. To solve the problem, auditors suggested using the mechanism of "Single Secret Leader Election" (SSLE).

As for the peer-to-peer exchange system, there is a danger of spam. There is no centralized node in the system that would evaluate the actions of other nodes, so a “malicious" node can spam the entire network with various messages without any special punishment. The solution to this problem may be to use special protocols for exchanging messages between nodes.