MT4 spy - is it possible?

Does anyone know if it is possible to spy on one´s trading strategy? In case I share my master password with a third party, is it possible for them to see my indicators and expert advisors? What information can they actually obtain from my trading?

Do you consider necessary to use a SecureLine VPN?

Indicators stays in your own console/private computer ( client side ) and Server only has your trading related information such as buy/sell... ( Server Side )
Unless they have access your private computer remotely, they have no way of knowing what and how this trade is triggered from Server side.

They might have access to trading history when they get data from your broker - where data will contain "manual" or "automatic" so it know if this trade is by Robot or by Human. It doesn't know what kind of indicator and what triggered trade open/close.

Thanks