Bitcoin rose as risk sentiment improved on April 21, 2026, while altcoins declined following a recent DeFi exploit. Market focus shifted to Middle East tensions, influencing investor confidence. The event highlighted ongoing security concerns in the crypto space, impacting altcoin performance despite Bitcoin's gains amid broader geopolitical and market developments.
Chinese advanced persistent threat (APT) groups are reportedly targeting Indian banks and Korean policy circles, with limited effort indicated by outdated tactics. The activity highlights ongoing cyber espionage concerns in the region, though specific dates and amounts were not disclosed. The campaign underscores the persistent security risks facing financial and governmental sectors in Asia.
Arbitrum has frozen $71 million in ETH linked to the Kelp DAO exploit, which occurred in April 2026. The move aims to secure the funds and prevent further misuse following the security breach. The incident highlights ongoing risks within DeFi platforms and the importance of proactive security measures in the Web3 space.
Michael Saylor and Tom Lee increased their Bitcoin and Ethereum holdings, with Saylor's recent purchase valued at $2.54 billion, boosting confidence in the assets. Meanwhile, Aave released an incident report detailing the KelpDAO exploit, highlighting ongoing security concerns within the DeFi sector. The moves reflect continued institutional interest amid security challenges in Web3.
Wallets linked to the $292 million Kelp DAO exploit are moving funds across chains after Arbitrum’s ETH freeze. The exploit involved a major breach, and the movement of stolen assets raises concerns about cross-chain security and the ongoing impact of the attack on DeFi protocols. Authorities and security teams monitor the situation as funds are transferred.
Identity-based attacks remain the primary entry point for cyber breaches, with attackers often using credential stuffing to obtain valid credentials. Despite advances in cybersecurity targeting sophisticated threats like zero-days and supply chain attacks, stolen credentials continue to be the most reliable method for attackers to gain initial access, highlighting ongoing vulnerabilities in digital security practices.
Arbitrum froze 30,766 ETH worth over $50 million linked to the KelpDAO hack on April 21, 2026. The attacker moved 75,701 ETH and began routing funds to Bitcoin, laundering over $176 million through multiple flows. Arbitrum's actions aim to contain the breach, but the attacker continues to push remaining assets beyond reach.
