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Explore the cutting-edge world of Substrate Framework in blockchain technology with our comprehensive article, perfect for experts and seasoned developers.

On February 21, 2025, a serious security incident occurred at the cryptocurrency exchange Bybit, where over $1.5 billion in assets were stolen. This incident is similar to the attack on the Radiant Capital cross-chain lending protocol in October 2025, where attackers stole funds by controlling multi-signature private keys and exploiting contract vulnerabilities. Both incidents highlight the increasing complexity of hacker attacks and expose security vulnerabilities in the crypto industry. This article provides an in-depth analysis of the technical details of the Radiant incident, focusing on the abuse of malicious contracts and multi-signature wallets. The article concludes by emphasizing the urgent need to strengthen industry security measures to protect user assets.

FLock.io is a decentralized platform based on blockchain technology. Through federated learning and decentralized training frameworks, it completely changes the development and deployment of artificial intelligence (AI) models. FLock solves problems in traditional AI development, such as centralized control, lack of transparency, and inadequate privacy protection, achieving democratization of AI technology. FLock's system design includes AI Arena, FL Alliance, and AI Marketplace, supporting the entire process from model training to deployment. FLock aims to promote the development of AI technology towards a more ethical and secure direction through transparent, privacy-protecting, and inclusive development processes.

When novices participate in cryptocurrency contract trading, it is essential to have a deep understanding of the basic knowledge of various contracts, clearly distinguish the characteristics and differences between perpetual contracts and delivery contracts, and make appropriate choices based on their own investment goals and risk preferences. At the trading strategy level, a long-term investment strategy requires precise selection of cryptocurrencies with potential and proficient use of phased opening techniques to reduce costs and risks; short-term trading strategies require clever use of technical indicators, close attention to market hotspots, and seizing fleeting trading opportunities. The most important thing is to pay attention to position management and risk management, so as to achieve stable and long-term profits in the market.