I had an engineer about my router to sort out my issue and he noticed that I gamed a lot during the past few days. (I rarely do but got a cool game so I did a bit lately). I just wonder how? Well I did download a game last night and last month. I am wondering, did he see just my download history (which is fine) or my internet history? I hope he didn’t as it’s just embarrassing :( I went on dating sites before I found a girlfriend and I’d rather him not see that also on top of that I brought my GF a sort of erotic lingerie. I’m so embarrassed. Is it possible for engineer to see what I search?
Your router may have logs which they can check to look for issues, so could be that.
I’ve seen some routers where it displays graphs breaking down the types of usage (Web. FTP, gaming, video) although these should be taken with a pinch of salt as it’s down to what is expected that port/protocol to be used for, so it could be that if your router has a page that displays that.
I wouldn’t usually expect your router to keep an extensive history of your DNS requests (however your ISP may do so, so bear that in mind if you plan to visit illegal websites). They would not know what page you visited though (assuming you are connected using HTTPS).
If they had a reason to need to look at your computer they might have seen your browsing history.