Yesterday I went to work, leaving my PC open as usual. It's a Windows 10, recently updated to Anniversary. After I came back, I moved the mouse to get out of monitor-sleep mode (PC was not in sleep) and I found Firefox open, at this address:
http://10.0.0.138/main.html?redirector=1
Not logged in, showing the router password prompt.
What could do it? The fact that it has redirector
in it suggests that it was triggered by a software, and not that some person (either local or remote) tried to open my router status page. I also doubt that it's malware, because I don't see a reason for malware to do that.
I had a look at the Event Log and couldn't find anything relevant.
The router is an ISP-rebranded Sagemcom F@st 4315.
EDIT
It happened again several times when the internet was down. Most likely some software trying to access the internet, as someone mentioned in the comments.
Any ideas?