Can a home computer, not wireless, be hacked from the outside and have pictures copied? Can I track and see if that happened?
Home computers are hacked all the time. Infected downloads, infected websites, etc can all result in compromises.
You can run tools to see if you might have been compromised, but no way to tell if pictures were removed.
It depends. Let me break each part down and answer more fully.
Can a home computer, not wireless, be hacked from the outside and have pictures copied?
Yes, if it has a network connection. No, not unless someone had physical access to it, or provided a network connection temporarily (such as connected a device like a cell phone via a usb drive to it). Can pictures be copied, of course. Anything on it can be copied, deleted, or otherwise done with as the hacker chooses, as long as they obtain the proper privileges. Assuming it is a normal windows based computer with limited account management - this is a simple issue. So if it was networked or someone had access to it; if they intended on hacking it; and if they wanted to copy pictures - yes they could and may have.
Can I track and see if that happened?
Maybe. If you want to put a lot of time and energy into deep diving into forensics and tear your machine apart at the bit and byte level you might be able to find some finger prints of the crime. You might be able to find some evidence of what took place, and you might find some leads as to where, why, etc. Think of it as any other crime scene - what is your skill, experience, and $$; and what is their skill, experience and time to conduct the crime. If it was a sloppy web based hack you may find some cache files that lead you to where the pics went. If you had had snort or some other IDS running (which I doubt) you might have captured some logs of network traffic... It is all about what evidence you find.
Unfortunately, on a typical home PC with multi-users, where a crime was done months ago... attribution is going to REAL hard.
But don't be dismayed. Maybe a little Sherlock Holmes'ing can get you part of the way there - low tech can sometimes solve problems better than high-tech.
The first thing that comes to my mind as an investigator is YOU feel there are specific pictures copied. Why? That is your lead. Has someone mentioned them? Are they somewhere they should not be? If so, then maybe you do some gum-shoeing and figure out how that took place.
Which if it is a person issue - let's just take a scenario of some not so flattering pictures showing up from your hard drive in an ex'es hands right before a divorce case is to be heard... Then maybe you have a pseudo-hack (as I like to call them) - Your ex, your kids, or a friend has put monitoring ware, or a backdoor on your machine and they have been pilfering it, and it is on there now.
The reason I bring this up, is the questions you ask, I hear a dozen times and they always lead back (just like a murder case) to the same familiar set of smoking guns like this one (or a handful of other kind of technical, but not so technical).
Unless you are a very specific value-added target for some highly talented hacker, why would they go after pictures? 9 times out of 10 that is an act of vengeance hack from someone we know or affiliated with someone we know.
Just my two cents.
If the computer does not have a connection to the outside world (i.e: no internet) then the likelihood is no. There are very few methods that could be used to access a home computer without any sort of connection to the outside world. Physical access or possibly a blue tooth exploit would be practical in this instance.
If the computer does have a connection to the outside world (i.e: has internet) then there is a possibility. It is possible that you visited a website or downloaded a file that infected you with some sort of virus or malware that allowed the "attacker" to gain access to and copy your pictures.
The chance of you tracking and determining what pictures were "stolen" or what was accessed is probably not going to be possible. At a very slim chance you may be able to validate if a file was modified or viewed by the created vs. modified vs. access date stamps on the file but that is the extent of it.