News linked to both this project and an event.
According to Ostium's official report, the core of this attack lies in the compromise of the off-chain price reporting system permissions, unrelated to smart contract vulnerabilities. After obtaining off-chain authorization, the attacker utilized the protocol's registered legitimate forwarding paths to submit forged prices ($5,000 and $60,000) to the BTC-USD market, atomically completing an open-close position arbitrage cycle within the same transaction. Starting with 100 USDC and rolling to amplify the scale across 8 transactions, they extracted 23.75 million USDC from the OLP vault within 5 minutes until the vault circuit breaker mechanism was triggered. The root cause lies in the off-chain infrastructure lacking a multi-party approval mechanism equivalent to on-chain multi-signature, creating a single-point permission vulnerability. The stolen funds have been converted to ETH and mixed via Tornado Cash; tracking efforts are still ongoing.
According to SlowMist monitoring, the decentralized finance protocol Lien Finance suffered an attack. The attacker exploited a smart contract vulnerability to mint unbacked bond tokens and stole approximately $542,000 worth of USDC. Leveraging this vulnerability, the attacker successfully minted new, non-anomalous BondTokens without burning the corresponding input bonds. Subsequently, the attacker exchanged the tokens for USDC via a pre-authorized address, ultimately transferring approximately 542,144.63 USDC from the victim's address. Analysis indicates that the incident was essentially caused by a verification flaw in the bond token exchange logic, which allowed the attacker to bypass asset collateral constraints and mint unsupported assets.
据 Blockaid 监测，Arbitrum 生态协议 AFX 于北京时间 7月 23日 5:30 遭攻击。此次攻击针对 AFX 运营的跨链桥，迄今已导致协议约 2415 万枚 USDC 被转移。Blockaid 称，正与 Arbitrum 团队协作响应事件，并协助相关协议控制被盗资金风险。
GoPlus Security issued a security alert stating that a user signed a malicious Permit transaction 183 days ago, resulting in approximately $1,625 worth of USDC being transferred by phishing attackers. Since the user did not revoke the relevant authorization thereafter, attackers exploited this authorization again to transfer approximately $75,780 worth of USDC.
the cross-chain protocol Allbridge has issued an official statement confirming that an attacker has withdrawn approximately $1.65 million in assets from the Allbridge Core liquidity pool. A detailed analysis of the incident is currently being compiled, and the full investigation results will be published subsequently. The team emphasizes that there is no further risk to current user liquidity and that the Allbridge Next service is operating normally.In response to this incident, Allbridge plans to relaunch the Core version but will remove the liquidity pool design. Future cross-chain transfers will be facilitated via Circle CCTP and the LayerZero router to eliminate the risk of liquidity pool imbalance and the model vulnerabilities exploited in this attack. This incident has accelerated the previously initiated migration plan to fully transition to the more secure new infrastructure, Allbridge Next. According to the plan, Allbridge Core and Allbridge Classic will cease operations in their current form within the next three months, and users are advised to withdraw their relevant liquidity in advance.It is understood that this attack has exposed the risks inherent in the traditional cross-chain liquidity pool model and has further driven the protocol's transition towards a cross-chain architecture based on message passing and native asset transfer.
according to Hinkal monitoring, full refunds will be issued this week to users who have completed the recovery process, with completion expected by July 22. Users who have not yet completed the recovery can still submit applications. Previously, Hinkal suffered an attack resulting in a loss of approximately 797,000 USDC, which the attacker exchanged for about 454 ETH.
Odaily reports, according to monitoring by Onchain Lens, Allbridge Core has been exploited on Solana. The attacker borrowed $1.12 million USDC via a Kamino flash loan, then rapidly executed a USDC/USDT swap, distorting the stablecoin pool ratio of Allbridge. They withdrew liquidity at the manipulated exchange rate and repaid the flash loan within the same transaction, extracting approximately $1.1 million in funds. The funds were subsequently mixed through a privacy protocol. The maximum single withdrawal from Allbridge was $2.24 million USDC. Further analysis of the vulnerability exploit and the affected pools is ongoing.
Odaily News: Headline: "Loss of 23.75 Million USDC: Ostium Price Data Attacked". According to Ostium's monitoring, Ostium has released an update on the security incident. Its liquidity provider treasury was attacked on July 15, resulting in a loss of 23,752,746 USDC. Preliminary investigations indicate that the attacker compromised the off-chain infrastructure that supplies price data to the protocol, submitting disguised, fraudulent price reports. By rapidly opening and closing multiple large positions, the attacker extracted artificially generated profits from the treasury. Ostium stated that trader collateral is stored in separate, isolated smart contracts and was unaffected by this incident; all trading positions remain open. The team paused trading and froze all trading contracts within 60 minutes of the first attack transaction. Currently, Ostium is cooperating with Mandiant, zeroShadow, Collisionless, SEAL 911, and law enforcement agencies, and is coordinating with trading platforms, bridge contracts, and stablecoin issuers to advance the investigation. The engineering team is repairing and strengthening the relevant infrastructure to support a safe resumption of trading. Ostium stated it will notify at least 24 hours in advance before thawing the trading contracts. Once trading resumes, existing positions will be marked at the price at the time of reopening, unaffected by price fluctuations during the suspension.
CertiK published an analysis stating that the Solana ecosystem protocol DeFiTuna was attacked on July 16, with losses of approximately 569,601 USDC. The attacker first created an extremely low-liquidity TUNA/USDC pool and swapped borrowed USDC into the pool via Jupiter routing. Since only a minimal amount of TUNA was ultimately obtained, the protocol experienced rounding down during the position asset value calculation, causing the total assets to be recorded as 0, thereby incorrectly passing the health and solvency checks.
Odaily reports, perpetual contract DEX Ostium stated that platform trading remains paused following a security incident. User positions remain open but cannot be modified for now, and trading margin funds are still held in the frozen trading smart contract without any movement.Ostium stated that its team is continuously coordinating with relevant authorities, SEAL 911, and multiple security researchers. Updates regarding the resumption of smart contract activities and the timeline for fund recovery will be released subsequently.According to PeckShield monitoring, approximately 24 million USDC from Ostium's public OLP vault was stolen. The attacker subsequently swapped these funds for approximately 12,100 ETH, of which about 10,500 ETH was transferred to Tornado Cash.
Odaily Odaily News According to MAX monitoring, on July 16, the Cascade CLS treasury suspectedly experienced a security vulnerability, resulting in approximately $1.3 million in user fund losses. The platform has suspended all trading and withdrawals and has invited SEAL 911 and other third-party security teams to investigate and handle the incident. Cascade is a 24/7 multi-asset perpetual contract platform headquartered in New York, targeting the US market. It supports deposits via Arbitrum USDC or bank accounts and is currently still in an invitation-only private testing phase.
According to monitoring by on-chain analyst PeckShield (@PeckShieldAlert), the public OLP vault of decentralized perpetual contract protocol Ostium (@Ostium) was attacked, with approximately 24 million USDC stolen. The attacker subsequently swapped the stolen funds for 12,080 ETH and has transferred 10,540 ETH into the mixer Tornado Cash to obscure the fund flow. On-chain tracing shows that the attacker's initial funds originated from ChangeNow and Bybit, with 1 ETH transferred from each to the attacker's wallet (0x321D...8bfD9).
Ostium, a decentralized perpetual exchange, suffered an oracle attack on Wednesday, resulting in losses of approximately 18 million USDC. The attacker submitted false price reports for future dates using compromised oracle signing keys, generating fictitious trading profits and receiving payouts from the Ostium liquidity vault. Ostium stated that it has identified the issue with the OLP vault, has suspended all trading, and the team is currently investigating. Deployed on Arbitrum, Ostium offers perpetual futures trading for real-world assets including stocks, commodities, forex markets, and indices. At the time of the attack, the total value locked (TVL) in the Ostium protocol was approximately $63 million. The attack drained nearly one-third of this liquidity. In the first five months of 2026, DeFi protocols have lost over $840 million to exploits, including $292 million from KelpDAO and $285 million from Drift Protocol.
according to on-chain analyst Yujin's monitoring, half an hour ago, an address (0x321...bfd9) with the DeBank username musti_akrep profited 23.75 million USDC by exploiting a vulnerability on Perp DEX Ostium and withdrew it. The 23.75 million USDC was withdrawn to the Arbitrum chain and immediately exchanged for 12,085 ETH at a price of $1,965. Currently, these 12,085 ETH remain on the Arbitrum chain.
Blockaid stated that it detected a vault exploit incident involving Ostium on Arbitrum. The attacker fabricated false trading profits through registered PriceUpKeep Forwarders and authorized oracle reports with future timestamps, triggering a payout of approximately 18 million USDC from the vault.
according to on-chain detective Specter's monitoring, the LayerZero_Core Executor wallet may have been compromised, resulting in a total multi-chain loss of $2.1 million. The attacker bridged the stolen funds to Ethereum via Stargate and Relay, and is currently holding 955 ETH (worth $1.78 million) and 322,000 USDC. CyversAlerts first identified this suspicious activity.
According to BlockSec monitoring, the BarnBridge SMART Yield cUSDC protocol was attacked on Ethereum, resulting in losses of approximately $776,000, suspected to be a governance attack. The attacker first gained DAO governance rights, then upgraded the SmartYield/controller proxy to a malicious implementation contract. This contract called the _takeUnderlying privileged function of CompoundProvider, utilizing pre-existing USDC approvals from 50 user accounts, and via transferFees, moved the aggregated funds to the attacker.
Bonzo Finance, a lending protocol based on Hedera, suffered an oracle attack, resulting in a loss of approximately $9 million. The attacker exploited collateral whose SAUCE token price had been artificially inflated to borrow assets far exceeding their actual value from the protocol. According to a preliminary incident report released by Bonzo Finance, the attacker deposited only 250 SAUCE tokens, then submitted a single price update that artificially inflated the token's price by approximately 12 orders of magnitude. Subsequently, the address borrowed 6.63 million USDC and 34.5 million wrapped HBAR from the lending pool.This attack was not due to a vulnerability in Bonzo Finance's smart contracts or the underlying Hedera network itself, but rather stemmed from a flaw in the on-chain oracle verifier of the oracle service provider Supra. It erroneously accepted a SAUCE price data point where the signature had been zeroed out. Supra has since confirmed the issue and completed a fix.
prosecutors from Wisconsin and New York have expressed dissatisfaction with stablecoin issuer Circle, as the company has repeatedly refused to cooperate with law enforcement agencies in recovering stolen funds.According to the report, multiple law enforcement agencies had requested Circle to help victims of fraud and hacking incidents recover their losses by burning and reissuing USDC. However, Circle declined these requests based on its own policy stance.Circle stated that modifying the blockchain ledger to reverse transactions would undermine the fundamental properties of the USDC stablecoin and could set a dangerous precedent for the entire crypto industry. This incident highlights the conflict between the immutability of blockchain and the need for law enforcement to recover assets. (Protos)
According to Fortune, DeFi asset management and risk analysis company Gauntlet completed a $125 million financing round, exclusively invested by Japanese financial group SBI Holdings. The financing was completed in June this year, and the specific valuation was not disclosed. This is Gauntlet's largest financing round since its establishment in 2018, far exceeding its $24 million Series B round in 2022 led by Ribbit Capital at a $1 billion valuation. Gauntlet was founded by former Wall Street quantitative trader Tarun Chitra. It initially focused on providing stress testing and vulnerability analysis services for DeFi protocols. Later, as the DAO governance model waned, it gradually transitioned to a "treasury curation" business—assessing yield strategy risks through quantitative analysis to help institutional investors manage digital asset allocation. Currently, its clients include asset management giant Apollo, Coinbase, and stablecoin issuer Circle.