Ethereum Wallet to be Implement in Opera Android

Developers believe that Opera will be first big browser for Web 3.0
11 July 2018   1808

Opera Software has built an Ethereum wallet in the latest version of the web browser Opera for Android. Beta testing is scheduled for July 11th.

The developers reported that Opera Crypto Wallet does not need an extension or a separate application for cryptocurrency operations, and the built-in security mechanisms on the Android system do not require the creation of new PIN codes and passwords when signing transactions. It is also stated that the wallet keys are stored only on the user's phone.

Opera Crypto supports a set of libraries API Ethereum Web3, which allows developers of decentralized applications (dapps) to interact with local or remote nodes of the network Ethereum.

Thanks to integration with Coinbase, users can pay for goods in the Opera Crypto Store from crypto wallet. Currently, the application supports Ethereum, as well as the standards of ERC-20 and ERC-721 tokens. 

The new version of the Opera browser, currently available in a private beta on Android, combines easy-to-use crypto wallet functionality with support for Ethereum decentralized apps, or Dapps. This means users can now interact with Web 3.0 using our popular and fully-featured Opera mobile browser. It also makes Opera the first major browser to introduce a built-in crypto wallet. Needless to say, we are pretty excited about this.

Charles Hamel


In the official blog, the developers of Opera said that the company has always been a supporter of Progressive Web (PWA) applications.

By allowing PWAs to use the Opera Crypto Wallet, we are now taking PWA support to the next level. This means that Dapp developers can now create native-like Dapps without having to embed a wallet on their own or relying on an external wallet app. Dapps can now be first class citizens on mobile!

Charles Hamel


In January, developers of Opera added protection from the miners to the mobile version of the popular web browser.

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.