Kept getting lockout emails at 3am, so I checked my router logs for a week
Last Tuesday I woke up to 14 failed login alerts from my email, all between 2 and 4am, and my router log showed a device I did not recognize hitting my network on and off since the 3rd. Turns out a neighbor's kid had been using an old guest password I set three years ago and never changed, and once I killed that network the alerts stopped cold. How often do you all rotate your WiFi passwords, because I clearly let mine sit way too long?