Spain invests to create Blockchain center in Barcelona

Spain is intended on the development of the Blockchain based technology in the country
25 May 2018   812

As reported in the local news, Barcelona Tech City will be building a specialized space for Blockchain technology development. The new working area will be situated a second building which will be near the headquarter Pier01. Barcelona Tech City headquarters were presented back in summer 2016, and will mostly be used by Spanish Blockchain network Alastria.

Currently Pier01 hosts over 1,000 local and international specialists from tech launches and undertaking hubs throughout the country. All of the working teams and staff members are the part of the city’s digital ecosystem which is placed in the reconstructed Palau de Mar.

In the nearest future various buildings of Barcelona Tech City are aimed to be connected by electric vehicles. The Tech City will also keep all the necessary services for the “inhabitants” such as centers for health, gaming, and media. In November 2017, a famous software firm, SAP announced about joining Alastria’s Blockchain consortium. According to the report, the consortium presently has more than 150 member organizations that include several major Spanish banks, leading telecommunications networks as well as many large and IT industry based universities.

The Blockchain tech hubs building has been broadly spreading worldwide as a meaningful recent IT industry trend. The announcement from Spain was one of the recent several important initiatives which all interested in the development of Blockchain technology. 

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.