BitPay to List Paxos Stablecoin

According to the participants, PAX will expand the capabilities of BitPay customers
21 November 2018   1282

BitPay began cooperation with Paxos. This is reported in the startup' blog.

According to the participants of the partnership, PAX will expand the capabilities of BitPay customers. The latter will be able to conduct transactions secured by "stability and confidence in the US dollar."

Previously, traders could work with Bitcoin and Bitcoin Cash via BitPay processing. In October, the service representatives announced support for the USD Coin and Gemini Dollar steylcoin companies.

According to CEO and co-founder Stephen Peir, PAX support will further expand the possibilities for low transaction costs settlement.

The vice-president of the company, Dorothy Chang, is confident that the new option will be of interest to traders in the first place. However, she has no doubt that this tool will also be of interest to traders.

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   1024

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.