David Priest/CNET
ADT is the granddaddy of all home security companies. It’s been around in one form or another for close to 150 years, and it remains one of the most recognizable brands on the market — if not the most. But ADT faces an evolving and ever-modernizing marketplace. Thanks to direct competitors like Comcast Xfinity and Vivint, along with a host of DIY home security options including…
