A bug in Comcast’s activation website for its Xfinity routers leaked sensitive customer data.

Security experts are warning owners of Mitsubishi Outlander Plug-In Hybrid Electric Vehicle that their cars can be hacked via the automobile’s on-board WiFi network used for remote control of key car features. The hybrid electronic vehicle, which is slated to be sold here in the U.S. starting this fall, suffers from weak password requirements that...