What is a cross-function reentrancy attack? Cross-function reentrant attacks use multiple functions to execute the attack, which can occur when single-function reentrant attacks are improperly mitigated. Cross-function reentrant attacks are more complex to find vulnerabilities in than single-function reentrant attacks because they use a combination of multiple functions. This article explores how cross-function reentrancy attacks work, examples of attacks, and how to prevent cross-function reentrancy attacks. Example of a cross-functional reentrancy vulnerability This smart contract adds: transfer The ability to transfer a user’s value to another user without using ETH. // SPDX-License-Identifier: MIT pragma solidity 0.8.20; import “@openzeppelin/contracts/utils/ReentrancyGuard.sol”; contract Vault…
Author: Crypto Flexs
Grayscale Ethereum Ethereum -5.15% With the launch of the spot Ethereum exchange-traded fund (ETF) in the United States, the Trust (ETHE) will no longer trade at a discount to its net asset value (NAV).According to YCharts data, ETHE, which has been trading at a discount for the past three years, reached a premium of 0.31% to NAV on July 3, ahead of the Independence Day holiday.The premium or discount to NAV indicates how much higher or lower the market price of each stock is relative to the value of the ether it represents.The ETHE discount rate has been decreasing since…
Solana could rally to $150 on the back of ETF expectations and the growth of the meme coin ecosystem. POODL is expected to be a new entrant into the Solana meme coin ecosystem. Scheduled to launch on July 17th, POODL combines fashion and cryptocurrency, targeting elite and Asian markets. Cryptocurrency investors are keeping a close eye on Solana (SOL) amid the turbulent market environment, eagerly anticipating potential bullish signals despite the recent downturn. Even as the market fluctuates, Solana’s performance remains important, especially with upcoming catalysts such as the potential approval of an ETF and the emergence of new Solana-based…
Binance, one of the world’s leading cryptocurrency exchanges, is celebrating its 7th anniversary with a variety of exciting events, giveaways, and rewards. According to Binance, the festival, which will run from July 5 to July 10, 2024, will offer Binance users multiple opportunities to win $7,000 worth of BNB token vouchers, digital badges, and exclusive Binance merchandise. X (Twitter) Giveaway Event Participants can join the celebration on X (formerly Twitter) by following Binance official channels and retweeting specific tweets with the hashtag #BinanceTurns7 along with a comment about what “Be Binance” means to them. This…
The overall cryptocurrency market is in a downtrend, with $300 million worth of liquidations occurring. Dogecoin derivatives volumes have increased by 80% as short sellers prevail. According to the Relative Strength Index (RSI), DOGE is highly oversold, but there is one problem. Dogecoin suffered a massive drop this Thursday as crypto bears placed their tokens in the crossfire of the ongoing market crash. DOGE, which lost more than 7% of its value in 24 hours, saw a total of $4.85 million liquidations on derivatives markets, most of which consisted of long positions. Bulls Take a Hit as DOGE Hits 3-Month…
05 July What is Data Ownership Protocol (DOP)? Posted at 10:57h In education Maria Lobusova The Data Ownership Protocol (DOP) is a pioneering initiative that aims to fundamentally improve data privacy and control on Web3. DOP leverages advanced cryptographic techniques such as zk-SNARKs and ECDSA to allow users to manage and optionally disclose their on-chain activity, striking a delicate balance between transparency and privacy. This allows users to curate the information they wish to share about their asset holdings and transactions, while ensuring interoperability with Ethereum decentralized applications (DApps) and maintaining liquidity. DOP operates on a decentralized autonomous organization (DAO)…
Bitcoin faces a fight to maintain its bullish momentum as Mt. Gox refunds trigger the biggest liquidation cascade in years.BTC Price Supertrend Support, Approaching First Test Since 2022According to data from Cointelegraph Markets Pro and TradingView, the Bitcoin (BTC) price drop reached 5% on July 5 alone, and traders are now focusing on the bullish boundary.BTC/USD 1-hour chart. Source: TradingViewThe first price level that popular trader Matthew Hyland is watching is the $52,000 level.This forms the floor of Bitcoin’s Supertrend indicator on a weekly basis, and is the basis for the price action since the all-time high of $73,800 in…
The gaming industry is undergoing a massive transformation with the rise of Play-to-Earn (P2E) games. These innovative platforms allow players to earn real value from their in-game activities, turning the gaming landscape into a lucrative business for both casual and hardcore gamers. As blockchain technology and cryptocurrencies continue to advance, P2E games are becoming more and more popular, giving players the opportunity to turn their gaming skills into real rewards. Here, we review some of the best Play-to-Earn games of 2024, with a particular focus on the promising IronDoge project.Exi Infinity (AXS)Axie Infinity is at the forefront of the Play-to-Earn…
According to Bitcoin mining pool operator F2Pool, there were only five Bitcoin mining rigs (ASICs) currently in operation at the current price as the cryptocurrency plunged below $55,000 on Friday morning.The Antminer S21 Hydro, Antminer S21, Avalon A1466I, Antminer S19 XP Hydro, and Antminer S19 XP are currently profitable with breakeven Bitcoin prices of $39,581, $43,292, $48,240, $51,456, and $53,187, respectively, according to F2Pool. According to The Block’s Bitcoin price page, the Whatsminer M56S++ is on the verge of profitability, with a break-even point of $54,424, and the Bitcoin price at the time of writing is $54,407. Meanwhile, Bitmain’s Antminer…
OKX Ventures, the investment arm of popular cryptocurrency exchange and Web3 technology company OKX, has announced that it has participated in the seed investment round of decentralized cloud computing company Prodia. According to OKX Ventures, this strategic move underscores OKX Ventures’ commitment to fostering innovation in the blockchain and Web3 sectors. Prodia’s Vision for Distributed Cloud Computing Prodia is leading the way in creating a distributed network of graphics processing units (GPUs) to provide more efficient and cost-effective cloud computing services. Leveraging the Web3 infrastructure, Prodia plans to use the seed funding to scale its…