Can users SSH to a game folder to edit game data?

Thanks for reading.

I am planning to use a data.txt to store scores, levels unlocked, etc.
Can a user SSH to a game folder to open/edit this data.txt?
If so, how would you encrypt this file to prevent users from editing?

Thanks. [import]uid: 12769 topic_id: 8226 reply_id: 308226[/import]