攻撃トランザクション：
0x26aa86261c834e837f6be93b2d589724ed5ae644bc8f4b8af2207e6bd70828f9
攻撃対象のスマートコントラクトはオープンソースです。
ステップ1：0x054e がトランザクションを送信し、ウォレット (0x41b8) の 0x0eba に管理者ロールを付与します。
次に、0x0eba が「DAOコントラクト」ロールを 0x1c93 に付与します。
最後に、0x1c93 (XXX) が withdrawFromUser 関数を呼び出し、資金を XXX コントラクトに送金します。
興味深いのは、被害者である 0x41b8 が 0x054e によって作成されたことです。
要約すると、0x054e は被害者である 0x41b8 ウォレットを作成しました。その後、0x054e は 0x0eba に管理者ロールを付与し、0x0eba はさらに 0x1c93 に「DAOコントラクト」ロールを付与しました。最後に、0x1c93 が被害者から資金を引き出しました。
The Decentralization Dilemma: Cascading Risk and Emergency Power in the KelpDAO Crisis
This BlockSec deep-dive analyzes the KelpDAO $290M rsETH cross-chain bridge exploit (April 18, 2026), attributed to the Lazarus Group, tracing a causal chain across three layers: how a single-point DVN dependency enabled the attack, how DeFi composability cascaded the damage through Aave V3 lending markets to freeze WETH liquidity exceeding $6.7B across Ethereum, Arbitrum, Base, Mantle, and Linea, and how the crisis forced decentralized governance to exercise centralized emergency powers. The article examines three parameters that shaped the cascade's severity (LTV, pool depth, and cross-chain deployment count) and provides an exclusive technical breakdown of Arbitrum Security Council's forced state transition, an atomic contract upgrade that moved 30,766 ETH without the holder's signature.
Weekly Web3 Security Incident Roundup | Apr 13 – Apr 19, 2026
This BlockSec weekly security report covers four attack incidents detected between April 13 and April 19, 2026, across multiple chains such as Ethereum, Unichain, Arbitrum, and NEAR, with total estimated losses of approximately $310M. The highlighted incident is the $290M KelpDAO rsETH bridge exploit, where an attacker poisoned the RPC infrastructure of the sole LayerZero DVN to fabricate a cross-chain message, triggering a cascading WETH freeze across five chains and an Arbitrum Security Council forced state transition that raises questions about the actual trust boundaries of decentralized systems. Other incidents include a $242K MMR proof forgery on Hyperbridge, a $1.5M signed integer abuse on Dango, and an $18.4M circular swap path exploit on Rhea Finance's Burrowland protocol.
Weekly Web3 Security Incident Roundup | Apr 6 – Apr 12, 2026
This BlockSec weekly security report covers four DeFi attack incidents detected between April 6 and April 12, 2026, across Linea, BNB Chain, Arbitrum, Optimism, Avalanche, and Base, with total estimated losses of approximately $928.6K. Notable incidents include a $517K approval-related exploit where a user mistakenly approved a permissionless SquidMulticall contract enabling arbitrary external calls, a $193K business logic flaw in the HB token's reward-settlement logic that allowed direct AMM reserve manipulation, a $165.6K exploit in Denaria's perpetual DEX caused by a rounding asymmetry compounded with an unsafe cast, and a $53K access control issue in XBITVault caused by an initialization-dependent check that failed open. The report provides detailed vulnerability analysis and attack transaction breakdowns for each incident.
