> For the complete documentation index, see [llms.txt](https://docs.krillprotocol.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.krillprotocol.com/krill-protocol-docs/technical-security/move-vs-solidity.md).

# Move vs Solidity

Krill Protocol is built on **Sui Move 2024**, which provides resource-oriented structural safety that eliminates entire classes of smart contract exploits common in Solidity.

| Threat / Vulnerability                | Solidity                           | Move (Krill Protocol)                                |
| ------------------------------------- | ---------------------------------- | ---------------------------------------------------- |
| **Token Duplication / Infinite Mint** | Possible (Arithmetic / Logic bugs) | **Structurally Impossible** (No-copy resource model) |
| **Token Loss / Accounting Leaks**     | Possible                           | **Structurally Impossible** (No-drop resource model) |
| **Reentrancy Attacks**                | Possible (Requires manual guard)   | **Structurally Absent** (Ownership & borrow checker) |
| **Integer Overflow**                  | Possible (`unchecked` blocks)      | **Safe Failure** (Automatic abort on overflow)       |
| **Formal Verification**               | Third-party external tools         | **Native Move Prover Support**                       |


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