Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
you must not transmit or otherwise make available to others any worms or viruses or any code of a destructive nature through the services . 

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