Urgent Android Security & Access Recovery -- 3

Firstly.. The device and email accounts belong to me .. This is purely to secure and protect a very important situation…any action taken is educational and reach me how to avoid this in future . Android specialist needed… Help needed to learn in a stealth mode, how I could (if necessary) gain access for transparency , if the worst happened… and compromised a delicate system. This would be the my own device which has been or attempted to be stolen from me , I’d especially need to know how to secure WA, as we communicate this way in our business partnership… if the delicate situation, was faced with a rat and infiltrated by a third person , would possibly and likely cause problems and disruption . RATE TO BE tDISCUSSED!