> For the complete documentation index, see [llms.txt](https://crezanetwork.gitbook.io/crezanetwork-whitepaper/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://crezanetwork.gitbook.io/crezanetwork-whitepaper/11.-anti-whale-and-circuit-breakers.md).

# 11. Anti-Whale & Circuit Breakers

CREZA limits single-wallet impact and protects the vault during stress events.

```mermaid
flowchart LR
    CALL[User transaction] --> RG[Reentrancy Guard]
    RG --> VL[Volume / limit check]
    VL --> CB{Circuit breaker?}
    CB -->|Normal| EXEC[Execute]
    CB -->|Stress| THROTTLE[Throttle redemptions]
```

## Transaction boundaries

| Limit                | Value                | Purpose                           |
| -------------------- | -------------------- | --------------------------------- |
| Max deposit          | $1,000 USDT / tx     | Blocks whale-sized single entries |
| Max daily withdrawal | $3,000 USDT / wallet | Prevents sudden vault shocks      |

Violations revert with explicit custom errors (e.g. deposit exceeds limit).

## Circuit breaker

If redemptions exceed **15% of vault liquidity in 24 hours**:

* Payouts are **throttled** across blocks
* Panic drains are slowed
* Incoming deposits can stabilize the backing ratio

## Flash-loan & MEV protections

| Control                         | Description                                       |
| ------------------------------- | ------------------------------------------------- |
| **ReentrancyGuard**             | Blocks recursive re-entry on deposit/claim/redeem |
| **Checks-Effects-Interactions** | State updated before external transfers           |
| **Same-block rule**             | No full deposit + exit in one block               |
| **Slippage bounds**             | User sets minimum USDT on redemption              |

These layers reduce sandwich attacks, flash-loan loops, and MEV extraction during high-volume windows.


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