I've googled around and can't really figure out what that means. I did notice that my wlan light on my router (tplink modem/router TD-W8960N) was flashing like crazy at the same time I got the alert (the alert came up 5 or 6 times within a couple minutes, unfortunately I lost power before I could get a screen shot and lost the log). I checked and no one was using wireless at the time, including any phones.

I'm using wpa2-psk with a very strong password and have since changed the password, but I'm wondering if someone managed to hack in? I changed the default login for the router when I first set it up several weeks ago.

Is this something I should worry about? Thanks.