"By creating a failure condition in the 2.4 GHz radio frequency band, the Comcast XFINITY Home Security System fails open, with the base station failing to recognize or alert on a communications failure with the component sensors. In addition, sensors take an inordinate amount of time to re-establish communications with the base station, even if their 'closed' state is switched to 'open' during the failure event," claims this report by Rapid7, a Boston-based security analytics and consulting group. More from ArsTechica here.
Does the Rapid7 test include techniques the average home is likely to face? "Our home security system uses the same advanced, industry-standard technology as the nation's top home security providers," Comcast spokesman Charlie Douglas told me. "The issue being raised is technology used by all home security systems that use wireless connectivity for door, window and other sensors to communicate. We are reviewing this research and will proactively work with other industry partners and major providers to identify possible solutions that could benefit our customers and the industry."
"Can burglars jam your wireless security system?" Last winter in Cnet, Ry Crist reviewed similar allegations and found home-security networks are indeed jammable, with the right equipment; but added that, for most of the simple-minded smash-in break-ins people buy home-security systems for, this isn't much of a worry. Read his story here. Earlier story with similar message in Wired here.