Router keeps resetting to default passwords

[RayDafty]

Over the last 2 weeks my Hub as been resetting it's self to default settings and Passwords. There's not specific time or activity that causes this. I know an easy solution would be to keep my password set to the default but I don't think it's secure as I've had random unknown devices connects to it previously, hence the non-default password.

[Chrisee]

@RayDafty unless your hub has obscure fault the only way the password can reset is if someone is manually resetting it by pressing and holding the reset pin.

Given your comment about unauthorised access to your WiFi has someone got physical access to the hub who is doing this to regain access to your WiFi?