GrizziFi milestoneReward Mechanism collectRefBonus Exploit

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Grizzifi Demo Site Logo/Homepage

GrizziFi was a decentralized finance (DeFi) platform launched on the Binance Smart Chain on August 12, 2025, offering BNB staking with attractive fixed returns and a 17-level passive income system. While it promoted itself as a secure, community-driven ecosystem with audited smart contracts and long-term sustainability goals, a critical flaw in its rewards mechanism was quickly exploited. According to security firms TenArmor and AgentLisa, the exploit involved manipulating milestone rewards through self-created wallets and flawed logic that counted total rather than active investments. The attacker drained approximately $61,000, and the GrizziFi team has not issued any response. The project's website is now offline, with no signs of recovery or support for affected users, raising concerns about a possible rug pull.

About GrizziFi

GrizziFi is a decentralized finance (DeFi) platform launched on the Binance Smart Chain (BSC) on August 12th, 2025. Designed to simplify and democratize access to DeFi, it allows users to stake BNB tokens through fully autonomous smart contracts, eliminating the need for administrative control and enhancing security. The platform caters to both novice and experienced users by offering an easy-to-use interface and transparent operations.

The core feature of GrizziFi is its staking model, which offers three fixed-term options with competitive returns: 5.6% over 7 days, 14% over 14 days, and 36% over 30 days. Users benefit not only from their own staking activities but also from a unique 17-level passive income system, encouraging community engagement and incentivizing users to grow the network.

Security and sustainability are central to GrizziFi’s mission. The smart contracts are audited, and the platform incorporates strategic yield farming and liquidity provision to support long-term viability. GrizziFi positions itself as more than just a staking tool—it aims to be a robust, community-driven ecosystem focused on steady, sustainable income and capital growth within the broader crypto space.

The description on DappRadar reads:

"GrizziFi is a next-generation decentralized finance (DeFi) staking and yield farming platform built on the Binance Smart Chain (BSC). Our mission is to simplify DeFi, making it secure, transparent, and accessible to everyone — from beginners to seasoned investors.

With GrizziFi, you can stake your BNB directly through 100% smart contracts, ensuring there is no admin control and your funds remain safe. Our platform offers competitive and flexible staking plans:

5.6% – 7 Days 14% – 14 Days 36% – 30 Days In addition to personal staking rewards, GrizziFi introduces a 17-Level Passive Income System, allowing you to earn from your network’s activity and grow together as a community.

We prioritize security with audited contracts and long-term sustainability through strategic yield farming and liquidity provision.

GrizziFi is more than just a staking platform — it’s a community-driven ecosystem built for steady income and long-term capital growth in the evolving crypto landscape."

The Reality

Unfortunately, it appears the the Grizzifi smart contract rewards mechanism contained a fundamental flaw which allowed for a quick exploit.

What Happened

GrizziFi, a DeFi staking platform on Binance Smart Chain, was exploited shortly after launch due to a flawed rewards mechanism, resulting in a $61,000 loss.

Key Event Timeline - GrizziFi milestoneReward Mechanism collectRefBonus Exploit

Date	Event	Description
August 12th, 2025 12:24:07 AM MDT	Grizzifi Contract Created	The Grizzifi smart contract is first created on the Binance Smart Chain.
August 13th, 2025 12:34:46 PM MDT	First Attack Transaction	The first attack transaction is successfully mined into the Binance Smart Chain.
August 13th, 2025 12:37:53 PM MDT	Second Attack Transaction	The second attack transaction is successfully mined into the Binance Smart Chain.
August 13th, 2025 8:54:00 PM MDT	TenArmor Posts Tweet	TenArmor posts an announcement about the exploit happening.
August 14th, 2025 6:20:00 AM MDT	Meta Trust Alert Post	An alert post is made by the MetaTrust team.
August 14th, 2025 6:56:00 AM MDT	Meta Trust Labs Post	The Meta Trust Labs team posts a more detailed analysis of the exploit on Twitter/X.

Technical Details

According to a report by TenArmor, the rewards mechanism of the Grizzifi smart contract was exploited by the attacker.

The hacker separated the attack into two steps, first creating news controlled wallets to amplify the `milestoneReward` through the `harvestHoney` function, then withdraw the `milestoneReward` with the `collectRefBonus`.

Security report from #AgentLisa @AgentLISA_ai shows the root cause is that team milestones based on total investments (including withdrawn) instead of active investments.

Victim Contract: 0x21ab8943380b752306abf4d49c203b011a89266b

Attack Transaction 1: 0xdb5296b19693c3c5032abe5c385a4f0cd14e863f3d44f018c1ed318fa20058f7

Attack Transaction 2: 0xdb4f2c0d2ab8f029d9576dc96b0a9b547ef6c90e17a7a3146b27514dfeba6bba

Total Amount Lost

TenArmor has reported a loss total of $61k.

The total amount lost has been estimated at $61,000 USD.

Immediate Reactions

It appears that the GrizziFi project did not officially respond to the incident.

Ultimate Outcome

The incident was reported on by TenArmor several hours later. The Grizzi Fi website appears to be offline.

Total Amount Recovered

There is no indication of any recovery.

There do not appear to have been any funds recovered in this case.

Ongoing Developments

The GrizziFi website appears to have gone offline, and it is unclear if the project was exploited or has performed a rug pull. There does not appear to be any assistance available for affected users.

Individual Prevention Policies

No specific policies for individual prevention have yet been identified in this case.

For the full list of how to protect your funds as an individual, check our Prevention Policies for Individuals guide.

Platform Prevention Policies

Policies for platforms to take to prevent this situation have not yet been selected in this case.

For the full list of how to protect your funds as a financial service, check our Prevention Policies for Platforms guide.

Regulatory Prevention Policies

No specific regulatory policies have yet been identified in this case.

For the full list of regulatory policies that can prevent loss, check our Prevention Policies for Regulators guide.