Comcast: "The issue being raised is technology used by all home security systems that use wireless connectivity for door, window and other sensors to communicate.”
Um, unless your sensors are home-run hardwired, like mine... and like how quality alarm installers have been doing for years.
Why didn't such bugs come to light when Comcast tested the device for potential security vulnerabilities. They did test that a radio controlled home security device was immune to conventional jamming?