Review this auction contract for security:
```
${{CONTRACT_CODE}}
```
Auction Type: ${{AUCTION_TYPE}}
Settlement Mechanism: ${{SETTLEMENT}}
Security review:
1. Bid handling security
2. Front-running prevention
3. Shill bidding detection
4. Reserve price handling
5. Time manipulation risks
6. Refund mechanisms
7. Settlement security
8. Cancellation handling
9. Gas griefing prevention
10. Recommended improvements
Include auction-specific attack vectors.Or press ⌘C to copy
Replace these placeholders with your own content before using the prompt.
[{CONTRACT_CODE][{AUCTION_TYPE][{SETTLEMENT]