The Unleash Protocol hack on December 30, 2025, led to $3.9 million in losses from unauthorized smart contract withdrawals. An attacker exploited the multisig governance to force a contract update, draining liquidity and bridging over 1,300 ETH to Tornado Cash.
Unleash Protocol detected unauthorized activity in its smart contracts, confirming losses from a governance exploit.
Attacker bridged over 1,300 ETH to Tornado Cash after funding the exploit address with ETH transfers.
SlowMist reported 200 protocol hacks in 2025, totaling $2.9 billion in losses, highlighting sophisticated DeFi vulnerabilities.
Unleash Protocol hack: $3.9M lost in smart contract exploit on Story Protocol app. Explore causes, Story impact, and 2025 DeFi trends. Protect your assets today.
What caused the Unleash Protocol hack?
The Unleash Protocol hack stemmed from a vulnerability in its multisig governance mechanism on December 30, 2025. An externally owned address gained administrative access, forcing an unauthorized smart contract update that enabled fund withdrawals without team approval. The protocol, a market app on Story Protocol, lost most of its $4.4 million in total value locked.
How did the Unleash Protocol hack impact Story Protocol?
The Unleash Protocol hack solely affected Unleash smart contracts, sparing the underlying Story Protocol infrastructure. Story Protocol, an L1 chain for intellectual property ecosystems, held $8 million in liquidity and $2.69 million in stablecoins by late 2025. It experienced a 24% stablecoin outflow in the prior week, unrelated to the incident. Unleash, one of its top apps, represented a setback, but the ecosystem’s smaller apps underscore ongoing smart contract risks. Following the announcement, Story’s native IP token dropped from $1.62 to $1.50, amid a quarterly decline from a $13 peak.
Frequently Asked Questions
What was the total loss in the Unleash Protocol hack 2025?
The Unleash Protocol hack resulted in initial losses of $3.9 million through unauthorized withdrawals from its smart contracts. The attacker drained most liquidity shortly after launch, bridging over 1,300 ETH to Tornado Cash after receiving initial funding.
What happened in the Unleash Protocol smart contract exploit?
On December 30, 2025, Unleash Protocol announced unauthorized activity where an attacker exploited multisig governance. This allowed a forced contract update, leading to fund transfers. The team halted operations for investigation, confirming no impact on Story Protocol.
Key Takeaways
- Multisig governance vulnerability: Attackers can exploit admin access to update contracts illicitly, emphasizing secure multi-signature setups.
- DeFi exploit trends: SlowMist data shows 200 hacks in 2025, with $2.9 billion stolen—up from $2 billion in 2024—targeting smart contracts and liquidity pools.
- Monitor ecosystem health: Incidents like Unleash highlight risks in emerging protocols; users should verify audits and TVL before engaging.
Conclusion
The Unleash Protocol hack exemplifies persistent smart contract risks in DeFi, with a $3.9 million loss tied to governance flaws amid 2025’s 200 exploits totaling $2.9 billion per SlowMist. Story Protocol remains operational, but the event underscores the need for robust security in IP-focused ecosystems. Investors should prioritize audited protocols and stay vigilant as DeFi evolves in 2026.
Unleash Protocol, built on Story Protocol, publicly noted the incident via its official announcement: “Earlier today, we detected unauthorized activity involving Unleash Protocol smart contracts, which led to the withdrawal and transfer of user funds. Our initial investigation indicates that an externally owned address gained administrative access.”
The protocol paused operations to probe recovery options, focusing on the attacker’s movements. Initial traces revealed the exploiter funded the address with ETH, executed multiple 100 ETH transfers to Tornado Cash, and bridged substantial ETH volumes.
This breach highlights broader 2025 trends. DeFi faced 126 incidents, draining $649 million, while centralized exchanges lost over $1.8 billion. Attacks grew more targeted, exploiting flaws for unauthorized minting or withdrawals, even in protocols with modest TVL like Unleash’s $4.4 million.
SlowMist’s analysis confirms a decline in incident volume from 400 in 2024 but rising sophistication and losses. Protocols must enhance governance, conduct frequent audits, and implement multi-layered defenses to mitigate such threats.
Source: https://en.coinotag.com/unleash-protocol-exploit-causes-3-9m-loss-ip-token-dips-on-story-concerns