Hypothetically, if someone had unauthorized access to my network, there are a lot of things that can happen, depending on the point of attack and how it accessed, I can assume that anything that is connected to the network can have potential to be monitored or hacked.
I don't know enough jargon to ask a specific question and understand that there are many ways to attack a network, so I would just like to know if the following is possible, not how it's done:
1) can someone know/view what websites someone is going to, what emails they're writing and the content, can access camera and record audio/video?
2) I've seen products, equipment, etc online that anyone can buy for the purpose of being able to monitor/record phone conversations, either through an app or some device (have seen them in the $1000's). There has to be something out there that consumers can buy for this purpose, maybe even police grade or government stuff. Possible?
3) Would it be fair to say that if someone had access to my network, that no matter what I do with the hardware, as long as they have that network access, that it would still be able to be hacked or monitored?
The broad question is on purpose, as I'm not looking for a particular solution, nor am I asking for the likelihood of this happening.
Also, if we could put aside the skill level/costs/motive it would take for someone to do this as well.