It may be 'the system' trying to be helpful by suggesting what it thinks your location is. I discover that my computer here does this quite often - or rather suggests that it can share 'my location' - where the page I've loaded thinks it would be a good idea if it had that information (mostly when browsing for stuff which is available in several locations in a multiple branch store chain). The trouble is that where it thinks I am rarely coincides with my actual location - which is fixed for probably 95% of my online excursions. I've seen just occasionally where it bases that imagined location on my TCPIP address, which is invariably a wrong assumption.
Have you been hacked? I'm not an authority in these issues; my answer would be that I don't think so, but it always pays to be cautious when something unusual like this shows up.