Balancer Hacker Converts Stolen Assets to Ethereum as Loot Climbs to $116.6 Million
Balancer, a major DeFi protocol, has suffered a significant exploit, with approximately $116 million drained from protocol vaults. On-chain data shows large, unusual outflows from Balancer’s “0xBA1…BF2C8” address to an external wallet, including 6,587 WETH (~$24.5M), 6,851 osETH (~$26.9M), and 4,260 wstETH (~$19.3M). The scale and nature of the transfers point to a coordinated attack involving high-value assets across multiple vaults.
Balancer has since confirmed the breach, stating that “around 7:48 AM UTC, an exploit affected Balancer V2 Composable Stable Pools.” According to the team, these pools have been live for several years, and some were outside the pause window, leaving them vulnerable. Pools that could be paused have been halted and are now in recovery mode, with the exploit confirmed to be isolated to V2 Composable Stable Pools. Balancer V3 and all other pools remain unaffected.
The protocol says it is working with leading security researchers and legal teams to investigate and will release a full post-mortem. Balancer also warned users about fraudulent communications circulating in the aftermath, emphasizing that official updates will only come through its verified X account and official Discord.
This incident marks one of the largest DeFi exploits of the year and has heightened security concerns across the sector.
Hacker Offloads Stolen Tokens Into ETH as Crypto Markets Face Broad Selloff
According to Lookonchain, the Balancer exploiter has begun swapping the stolen assets for ETH, accelerating concerns that the attacker intends to consolidate and move value quickly before defenses or recovery mechanisms can engage. Converting large amounts of liquid-staking tokens and wrapped assets into ETH not only solidifies the hacker’s control over the stolen funds but also signals an intent to exit positions entirely rather than negotiate or return funds — a troubling sign for victims and the protocol.
This development is unfolding during one of the sharpest pullbacks the market has seen in recent months. Ethereum has fallen below $3,500, a key psychological and technical level, while Bitcoin has broken under the $105,000 support, intensifying fears of deeper downside as liquidity thins and sentiment deteriorates. Altcoins, already under pressure from macro-driven derisking, are bleeding heavily, with capital rotation stalling and speculative flows evaporating.
For Balancer, the timing compounds the severity of the crisis. A major security breach during a fragile market period magnifies losses, erodes confidence, and increases the risk of liquidity dislocations. The DeFi ecosystem is now closely watching both the hacker’s next moves and Balancer’s recovery plan as the sector navigates heightened stress on both technical and sentiment fronts.
BAL Breaks Down Further As Market Selloff Drives Heavy Pressure
BAL has entered another phase of sustained weakness, with the weekly chart showing a clear downtrend that has now intensified following the confirmed exploit. After trading near the $1 region for months, the token has broken lower, currently hovering around $0.80 and showing a sharp weekly decline. The chart reflects heavy selling volume, suggesting that the security breach accelerated an already fragile market structure.
Technically, BAL remains below the 50-week and 200-week moving averages, reinforcing a long-term bearish trend with no immediate signs of reversal. Each attempt to establish support has been met with lower highs and breakdowns, indicating persistent distribution and a lack of sustained buyer interest. The recent spike in volume during the selloff confirms capitulation behavior rather than accumulation, as fear spreads across the DeFi sector.
Market sentiment around BAL has deteriorated further given the exploit’s timing. With Ethereum trading below $3,500, Bitcoin losing key support near $105,000, and altcoins bleeding across the board, risk appetite is at a low point. For BAL to show recovery signals, it would need to reclaim psychological support near $1 and stabilize volume flows. Until then, price action remains vulnerable, and further downside cannot be ruled out as confidence rebuilds slowly.
$ETH $BTC
Balancer Protocol Faces $70 Million Outflow in Suspected Crypto Exploit
Balancer, one of the most established decentralized finance (DeFi) protocols with more than $700 million in total value locked (TVL), appears to have suffered a serious exploit, adding fresh stress to an industry still grappling with security concerns. Early on-chain evidence indicates that attackers drained assets across multiple chains, with losses now exceeding $98 million, making this one of the largest DeFi breaches of 2025 so far.
The attack appears to have targeted Balancer liquidity pools, siphoning high-value assets including wrapped ETH and liquid-staking derivatives through coordinated cross-chain movements. Initial wallet traces show funds rapidly routed through mixing services and bridge networks. This suggests a sophisticated operation designed to minimize traceability.
This is not the first time Balancer has faced a security incident, and the scale of this exploit reignites conversations around protocol hardening, liquidity pool design risk, and cross-chain attack vectors. It also deals a blow to market confidence at a time when institutional interest in DeFi infrastructure has been slowly recovering.
Over $98M in ETH-Based Assets Drained as Market Weakness Adds Pressure
According to on-chain data compiled by Lookonchain, the Balancer exploit resulted in the loss of a significant amount of high-value Ethereum-based assets. Among the stolen funds were 6,587 WETH (worth approximately $24.46 million), 6,851 osETH (valued around $26.86 million), and 4,260 wstETH (roughly $19.27 million). These figures confirm that the attacker targeted core liquidity holdings, particularly liquid-staking assets and wrapped Ether. Assets commonly used in advanced DeFi strategies and institutional portfolios.
The scale of outflows highlights the exploit’s severity and underscores persistent vulnerabilities in cross-chain and liquidity-pool architecture. More importantly, this incident has arrived at a sensitive moment for the market. Ethereum is already under selling pressure, struggling to reclaim key levels amid broader crypto market weakness. Risk appetite has thinned, liquidity has become more selective, and sentiment remains fragile following recent volatility.
The Balancer breach adds another layer of stress to an ecosystem trying to regain its footing. Major exploits like this serve as a stark reminder that smart-contract risk remains one of the sector’s biggest challenges. With investors already cautious, the timing amplifies uncertainty — and the market’s reaction in the coming days will be a critical test for confidence across the Ethereum and DeFi landscape.
Balancer (BAL) Trades Near Cycle Lows as Sellers Maintain Control
Balancer’s native token BAL continues to trade under heavy pressure, now sitting near $0.97 and hovering close to multi-year lows. The weekly chart reflects persistent weakness, with price trending steadily downward since mid-2024 and repeatedly failing to reclaim key moving averages. The 50-week and 100-week moving averages remain firmly above price and slope downward, reinforcing a long-term bearish structure and signaling that momentum remains with sellers.
Recent attempts to rebound have been shallow and short-lived. Indicating limited buying interest and a reluctance from market participants to position aggressively following the latest exploit news. This weakness predates the incident. However, BAL has been in a consistent downtrend for months, struggling to sustain demand even during broader market relief phases
With the token sitting near its post-listing lows, the market is in a “show-me” phase. Bulls need to reclaim at least the $1.20–$1.40 area and break above the 50-week moving average to challenge the prevailing downtrend. Failure to do so risks deeper price compression and potential price discovery lower.$BTC $ETH

Techandtips123
2025/11/04 02:02
Deep Dive : How Balancer Was Hacked For $128 Million
On November 3, 2025, the decentralized finance protocol Balancer sustained a significant security breach, resulting in losses exceeding $128 million. The attack was not an isolated event; it was a multi-chain exploit that compromised Balancer's V2 vaults across several major blockchains, including Ethereum, Base, Polygon, and Arbitrum. Attackers systematically drained high-value assets, primarily staked Ether derivatives like WETH, osETH, and wstETH, from the protocol's Composable Stable Pools.
The market reacted with immediate alarm. The protocol's native token, $BAL , fell by more than 4%, and on-chain data showed a rush of withdrawals from concerned users, including one long-dormant wallet that moved to withdraw its entire $6.5 million position. What made the event particularly disconcerting for the industry was Balancer's reputation. As a protocol active since 2020, its code was considered battle-tested, having undergone at least eleven separate audits by four of the industry's most reputable security firms, including OpenZeppelin, Trail of Bits, and Certora. The exploit revealed a subtle, yet critical, vulnerability that had gone undetected, raising serious questions about the efficacy of current security practices in DeFi.
II. How the Hack Happened: A Technical Breakdown
The attack was a sophisticated manipulation of the protocol's internal logic, not a brute-force compromise. The method was precise, targeting a specific flaw in the smart contract architecture.
The Point of Entry: The manageUserBalance Function
The vulnerability was located within a core function in Balancer's V2 vault contract called manageUserBalance. This function serves as the central accounting ledger for the vault, handling all internal token operations such as deposits, withdrawals, and balance transfers.
The Flaw: A Defective Access Control Check
Within this system, a security procedure named validateUserBalanceOp was intended to verify the legitimacy of every transaction. It contained a critical flaw in its access control logic. For a specific, less-common operation known as an "internal withdrawal" (UserBalanceOpKind.WITHDRAW_INTERNAL), the check failed to properly confirm that the address initiating the transaction was the same address that owned the funds being moved.
The Attack Vector: Exploiting the Logic Gap
The attacker deployed a malicious smart contract designed to interact with the Balancer vault. This contract repeatedly called the manageUserBalance function, issuing a series of these flawed internal withdrawal commands. On-chain analysts have suggested the attacker was able to "convert fake fee balances into real assets," effectively tricking the protocol into processing unauthorized transactions.
The Execution: Draining the Vaults
Because the validateUserBalanceOp security check was defective for this specific operation, the vault's logic executed the malicious instructions without flagging them as improper. The attacker's contract commanded the vault to transfer assets from the liquidity pools into an address they controlled. The vault complied, allowing the attacker to systematically drain millions from the V2 Composable Stable Pools.
III. An Analogy
To conceptualize the exploit without deep technical knowledge, consider Balancer as a high-security bank vault managed by a flawless robotic teller. This robot follows its programming, the smart contract, with perfect precision.
To authorize any transfer, a customer must complete a specific form. For 99% of transactions, the robot is ruthlessly strict, requiring multiple forms of biometric identification.
However, a single, obscure form exists for "Internal Administrative Balancing," a legacy function for moving assets between safety deposit boxes within the vault itself. Due to a minute oversight in its programming, the robot is instructed not to perform an ID check for this one specific form.
The attacker does not try to force the vault door. Instead, they walk in, find this specific form, and write instructions to move the contents of hundreds of other boxes into their own. The robot takes the form, recognizes it as the special "no ID required" type, and executes the commands perfectly. The attacker then uses their own key to empty their now-full box and leaves. The vault's security was not broken; its own rules were used against it.
IV. Why Did This Happen?
The direct cause of the hack was a critical bug in the code. A faulty access control created a functional backdoor.
The more profound question is how this vulnerability persisted through at least eleven audits from elite firms like OpenZeppelin, Trail of Bits, Certora, and ABDK. The answer points to a systemic challenge in securing increasingly complex DeFi protocols. The vulnerability was not a common or easily detectable error. It was a subtle logic flaw buried deep within an intricate system of interconnected contracts.
The incident has fueled a growing skepticism about the assurances provided by security audits. As one blockchain researcher, Suhail Kakar, noted in a post on X, "This space needs to accept that 'audited by X' means almost nothing". When a vulnerability can lie dormant for years in a battle-tested protocol, it forces a difficult re-evaluation of what "security" truly means in a permissionless financial ecosystem.
V. The Aftermath:
The fallout from the exploit was immediate and cascaded across the entire DeFi landscape.
Balancer's Response: The team moved quickly to acknowledge the exploit and began a forensic investigation with security experts. They paused all V2 pools that could be paused and placed them in "recovery mode" to mitigate further losses, while confirming that V3 pools were unaffected. The team has promised a full post-mortem report and stated that affected users will be eligible for compensation.
Ecosystem Contagion: The open-source nature of DeFi meant Balancer's flaw was not its alone. Dozens of projects have "forked" its V2 code, inheriting the same vulnerability. This led to a series of unprecedented and drastic actions across the industry:
Berachain, a network with deep integrations into Balancer, took the extreme step of halting its entire blockchain. Validators stopped producing blocks to prevent the exploit from draining its native exchange, effectively freezing roughly $12 million in user funds to prevent their theft.
On Polygon, network validators reportedly took action to censor the hacker's transactions, freezing the stolen assets in place.
Other platforms built on Balancer's architecture, including Sonic, Beefy, and Gnosis, scrambled to implement their own emergency measures to protect user assets.
A Crisis of Confidence: The hack has delivered a significant blow to trust in DeFi. As Flashbots' strategic director Hasu noted, every time a long-standing and heavily audited protocol is compromised, it "sets back the adoption process of decentralized finance (DeFi) by six to twelve months". The Balancer exploit serves as a stark lesson that even in the most fortified corners of DeFi, the risk of a single, overlooked flaw can lead to catastrophic failure.