shield Business Logic Flaw · $61K loss

Grizzifi Hack: How $61K Was Lost in a Business Logic Flaw (2025)

On August 2025, Grizzifi was exploited in a business logic flaw, resulting in approximately $61K in losses. That makes the Grizzifi exploit the 254th largest DeFi incident out of 690 documented in our archive.

Attack Mechanics: How the Grizzifi Business Logic Flaw Played Out

Exploit Class Applied to Grizzifi

The Grizzifi incident on August 13, 2025 is classified as a Business Logic Flaw. A business-logic bug in the contract — such as an incorrect formula or missing state update — lets the attacker withdraw more than their share. In the full archive, Grizzifi is 1 of 144 documented business logic flaw incidents.

Grizzifi in Context

At $61K, the Grizzifi exploit is a minor (<$1M) event compared to the largest same-class incident in our archive — – EulerFinance (2023) at $200M.

Prior Business Logic Flaw Before Grizzifi

The nearest business logic flaw incident before Grizzifi was WXC, 2 days earlier on August 11, 2025. The same exploit class surfaced again within the business logic flaw attack surface.

Grizzifi Vulnerability Signature

The primary source categorises the Grizzifi exploit specifically as “Logic Flaw”. This narrower label is entity-specific: it reflects how the Grizzifi contract failed, rather than the broad business logic flaw pattern alone.

Impact & Recovery for Grizzifi

Grizzifi Loss Figure

The Grizzifi exploit caused $61,000 in losses — a minor (<$1M) incident and the 38th largest of 96 documented in 2025.

Where Grizzifi Sits Among Business Logic Flaw Attacks

Ranked by loss size, Grizzifi is the 45th largest of 144 business logic flaw incidents documented. That puts the Grizzifi loss below the class average of $6.08M.

Timeline Since the Grizzifi Incident

The Grizzifi exploit occurred 8 months ago (244 days). The contract, its fork-block, and the attack transaction remain on-chain and forensically reproducible.

Primary Reference for Grizzifi

Public post-mortem / on-chain analysis for the Grizzifi incident: view source.

FAQ

How much did Grizzifi lose?

The Grizzifi exploit in August 2025 resulted in $61,000 in losses — the 38th largest of 96 DeFi incidents that year.

When did the Grizzifi hack happen?

The Grizzifi exploit was recorded on August 13, 2025 — 244 days ago.

What type of exploit hit Grizzifi?

The Grizzifi incident is classified as a Business Logic Flaw. A business-logic bug in the contract — such as an incorrect formula or missing state update — lets the attacker withdraw more than their share.

How common is the Business Logic Flaw pattern seen at Grizzifi?

Our archive contains 144 documented business logic flaw incidents. The Grizzifi incident is one of them.

How does Grizzifi compare to the largest Business Logic Flaw attack?

The largest business logic flaw incident in our archive is – EulerFinance (2023) at $200M. The Grizzifi loss is $61K.

What happens during the payment channel closure phase?

The channel is closed by submitting the final state to the blockchain, and funds are settled between parties.

What was the immediate effect on Moscow's MOEX index following the invasion?

It dropped almost 9% in the week following the invasion.