Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
reverse engineer , decompile , disassemble , decipher or otherwise attempt to derive the source code for any underlying software or other intellectual property used to provide the service or any supercell game , or to obtain any information from the service or any supercell game using any method not expressly permitted by supercell . 

```
. OPTIONS: ['Unilateral termination' 'None' 'Content removal' 'Jurisdiction'
 'Unilateral change' 'Arbitration' 'Limitation of liability'
 'Choice of law' 'Contract by using'].