All of the home security systems available at Walmart seem to rely on the Internet. Users can check their cameras via the Internet on their phones or work computers.
This seems to introduce a significant security problem, as one has to trust that: (1) employees at the company producing the product are not accessing the cameras; (2) employees to not leak passwords; and (3) there is no security breach at the company enabling anyone to access your camera feeds.
Is there any way to setup a home security system that can similarly notify me of intruders, while I am at work or traveling, but which does not rely on security cameras? Or is there another form of detection which avoids the problem above?