When you have a cyberstalker and I sincerely hope you never do, the issue with this is that if they are in your device or your device is cloned you have no control.
Their aim with regards to device control is for you to lose your data and access to your drives in order for you to have no evidence for a case. Also, to snoop through your data. I know it sounds crazy, because it is. Your data can also be used against you where they place triggers with regards to conversations you are having over your phone and images and meme's are placed in google or facebook to play with your mind. A cruel game indeed.
This is what my sociopath did. It has nothing to do with the standard algorithm.
It took me a few months of experiencing much frustration and plenty of pity parties to outsmart them.
A clean SD card which you do not keep in the slot of your phone is what you need.
You keep it behind your phone in a pouch.
When you need to save data (evidence), you put your phone totally offline, into flight mode. Insert the SD card and save the data to it. Remove it and put your data back on. This way while you are trying to save the data they do not drop a trojan horse (virus) onto the SD which either blocks you from saving anything or again shares the information to the hacker. In my case, my ex boyfriend...
Identifying cloned phones or a hack -
Two identical phones are listed, the one is yours and the other is just there placed under listed phones that you cannot remove.
Your software on the phone is glitchy.
You cannot reach people or text messages get sent in duplicate.
You cannot back up your data to an external USB or PC.
Your data disappears for no reason and is never recovered.
I confess to being reckless and stayed logged into my gmail accounts which had evidence of his horrific behaviour from 2012. I was locked out and lost years of evidence. I also lost 15 years of pictures which included my children which was very sad.
I opened my case at SAPS which is now at the Regional Court. The evidence which created a solid case is by screenshot. 90% of my case is screenshot. It proves to be viable evidence in court.
Never underestimate the power of a screenshot.
Rise Up Against Gender Based Violence - Rebekkah Williams - The Truth