Revolut to Expand to 24 New Markets

By the end of this year, the service will be available in eight countries and other will be added in 2020
30 September 2019   450

The British fintech startup Revolut has entered into an agreement with the payment giant Visa, under which it will begin work in 24 new markets, including in Russia. It is reported by Reuters with reference to the head of the Revolut Nikolai Side.

By the end of this year, the service will be available in eight countries, including the Russian Federation, Brazil, Japan and the United States. Revolut plans to enter the markets of Latin America and Asia in 2020.

According to Party, the expansion will depend on the regulators of different countries, from which it is necessary to obtain appropriate permits.

In partnership with Visa, the company plans to issue at least 75% of all cards.

Revolut expects that entering the global market will double or even triple the number of users. Now the company's customers are about 8 million people, and the total amount on deposits is more than 8 billion euros.

Revolut will employ up to 3,500 new employees to implement these plans.

Revolut cards allow you to exchange one currency for another without bank fees, converting funds at the average market rate.

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   913

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.