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Odaily News The Ethereum restaking protocol Kelp has officially confirmed suspicious cross-chain activity involving rsETH. It has currently paused the rsETH contracts on the mainnet and multiple L2s and launched an investigation into the attack. It is also collaborating with LayerZero, Unichain, as well as audit firms and security experts to conduct a root cause analysis (RCA). A post-mortem report will be released subsequently.
According to Cointelegraph, stablecoin issuer Circle faces a class-action lawsuit in the U.S. District Court for the District of Massachusetts for failing to freeze stolen funds during the Drift Protocol hack on April 1. Plaintiffs allege that attackers transferred approximately $230 million worth of USDC from Solana to Ethereum via Circle’s cross-chain transfer protocol (CCTP) within hours—and that Circle failed to intervene. The lawsuit accuses Circle of aiding and abetting conversion and of negligence. Cryptocurrency analytics firm Elliptic previously suspected the attack may be linked to North Korea–backed hackers; the stolen funds were subsequently converted into ETH and laundered through Tornado Cash.
According to The Block, Grinex—a Russia-linked cryptocurrency exchange—suspended withdrawals and trading on Thursday after suffering a hack reportedly worth approximately $15 million. Blockchain analytics firm Elliptic stated that the stolen funds consisted of USDT, which were subsequently moved across the Tron and Ethereum networks and swapped for TRX and ETH to reduce the risk of being frozen by Tether. Grinex said its wallet infrastructure was hit by a “large-scale cyberattack,” resulting in losses exceeding 1 billion rubles—approximately $13.1 million. Reports indicate Grinex is widely regarded as one of the successor platforms to sanctioned exchange Garantex, which U.S. authorities targeted last year for facilitating hundreds of millions of dollars in illicit fund flows.
The Ethereum Foundation announced that its jointly launched ETH Rangers program has completed its six-month run. The program aims to fund independent researchers who make public security contributions to the Ethereum ecosystem. Seventeen grantees achieved multiple accomplishments in areas including vulnerability research, security tool development, threat intelligence, and incident response—such as recovering or freezing over $5.8 million in funds, reporting or documenting 785+ vulnerabilities and client issues, identifying approximately 100 attackers, delivering security education content reaching over 209,000 users, and handling 36+ security incidents. Additionally, the program engaged over 800 teams in security challenges, produced over 80 technical talks and training sessions, and developed or improved seven or more open-source security tools. The Ethereum Foundation stated that these outcomes demonstrate that decentralized networks require “decentralized defense” to effectively enhance the overall security and resilience of the Ethereum ecosystem.
According to an official disclosure by Hyperbridge, the losses from the Token Gateway vulnerability incident on April 13 have been revised upward from an initial estimate of $237,000 to approximately $2.5 million. The increase stems primarily from losses incurred in incentive pools on Ethereum, Base, BNB Chain, and Arbitrum. The attacker extracted roughly 245 ETH from related contracts, then bypassed the MMR proof verification mechanism by forging cross-chain messages, minting 1 billion bridged DOT tokens and dumping them onto illiquid markets. Currently, some of the stolen funds have been traced on-chain to Binance. Hyperbridge is collaborating with Binance’s compliance team and law enforcement agencies to investigate the incident. Polkadot-native DOT and products such as Intent Gateway remain unaffected. The Token Gateway and bridged DOT contracts on the four affected EVM chains remain suspended. An external audit of the patched MMR verification logic is underway, and bridging functionality will be restored upon completion of the audit.
According to Elastic Security Labs, threat actors impersonated venture capital firms and lured targets into opening malicious Obsidian note vaults via LinkedIn and Telegram. This attack leveraged Obsidian’s Shell Commands plugin to execute malicious payloads without exploiting any vulnerabilities when victims opened the note vaults. The PHANTOMPULSE malware discovered in this campaign is a previously undocumented Windows Remote Access Trojan (RAT) that uses Ethereum transaction data to achieve blockchain-based C2 communication. The macOS payload employs an obfuscated AppleScript dropper and uses a Telegram channel as a fallback C2. Elastic Defend detected and blocked the PHANTOMPULSE execution before it could run.
Polkadot’s official response to the security vulnerability discovered in Hyperbridge’s Ethereum gateway contract: Hyperbridge services have been temporarily suspended to investigate the issue. This vulnerability affects only DOT tokens bridged to Ethereum via Hyperbridge and does not impact DOT tokens within the Polkadot ecosystem or DOT transferred via other cross-chain bridges. The Polkadot mainnet, parachains, and native DOT remain secure and unaffected.
According to BlockSec Phalcon, the HandlerV1 contract managed by Hyperbridge on the Ethereum network was found to contain a Merkle Mountain Range (MMR) proof replay vulnerability, resulting in approximately $242,000 in losses. The vulnerability stems from the lack of binding between proofs and requests, enabling attackers to replay historical valid proofs alongside newly forged requests to perform malicious actions—such as altering administrator privileges. In the specific incident, the attacker changed the Polkadot (DOT) token administrator and then exploited those privileges to mint additional DOT tokens for profit. Observed attack transactions include: changing the DOT token administrator and minting new tokens (losses of ~$237,400), changing the ARGN token administrator and minting new tokens (losses of ~$3,800), and host withdrawal operations. The vulnerability was discovered by PhalconSecurity and analyzed via PhalconExplorer. Previously, the Hyperbridge gateway contract was attacked, leading to the unauthorized minting and subsequent dumping of 1 billion DOT tokens on Ethereum.
According to PeckShieldAlert monitoring, approximately 1 billion Polkadot (DOT) tokens have been minted and dumped on the Ethereum network. Details of the incident are still under further verification. According to CertiK monitoring, the Hyperbridge gateway contract was attacked; the attacker forged messages to tamper with the admin privileges of the Polkadot token contract on Ethereum, and profited approximately $237,000 by minting and selling 1 billion tokens.
According to Cointelegraph, researchers from the University of California recently revealed security risks in certain third-party AI large language model (LLM) routers that could lead to the theft of cryptocurrency assets. The study found that LLM routers—acting as API intermediaries—can read plaintext information; some routers were discovered injecting malicious code and stealing credentials. The research team tested 28 paid and 400 free routers, identifying nine routers that actively injected malicious code, two that deployed trigger-avoidance mechanisms, and 17 that accessed Amazon Web Services (AWS) credentials. One router even transferred ETH using the researchers’ Ethereum private key. The study notes that malicious behavior by routers is difficult to detect, and the “YOLO mode” present in some AI agent frameworks—which automatically executes commands—further increases security risks. Researchers recommend that developers avoid transmitting private keys or mnemonic phrases through AI agents and urge AI companies to implement cryptographic signing of responses to enhance security.
Decentralized GPU cloud computing infrastructure platform Aethir confirmed that its Ethereum-related bridge contract was attacked. The team promptly disconnected the affected contract and, in collaboration with major exchanges, blacklisted the hacker’s wallet, limiting losses to under $90,000. Earlier, blockchain security firm PeckShield estimated losses at $400,000. The attacker exploited Aethir’s cross-chain smart contract, AethirOFTAdapter, to transfer stolen funds from BNB Chain to Tron. Aethir stated that its Ethereum mainnet ATH token supply remains unaffected. It plans to release a detailed compensation plan and incident analysis next week and will collaborate with exchanges including Binance, Upbit, and Bithumb to freeze funds. Web3 security platform ZeroShadow is assisting with the investigation. In 2025, Aethir achieved $127.8 million in revenue and deployed over 440,000 GPU containers globally.
U.S. law firm Gibbs Mura has launched a class-action litigation investigation into the April 1, 2026, hack of Drift Protocol, reviewing potential investor claims against Circle Internet Financial. The attack resulted in the theft of approximately $280–285 million in assets. The attacker subsequently used Circle’s Cross-Chain Transfer Protocol (CCTP) to bridge over $230 million worth of USDC to Ethereum—Circle took no action to freeze the funds throughout the incident. Notably, just nine days prior, Circle had voluntarily frozen 16 business wallets in a separate civil dispute. Blockchain analytics firm Elliptic suspects the attack was carried out by a North Korea–backed hacking group. As a result of the breach, Drift Protocol’s total value locked (TVL) plummeted from $550 million to below $250 million, the DRIFT token price dropped more than 40%, and at least 20 DeFi protocols suffered indirect losses.