Security firms have launched routers at CES that can stop smart household gadgets being hijacked by hackers.
Symantec, BitDefender and Intel unveiled devices that scrutinise data as it flows across home networks.
The companies say routers with built-in defences will be essential as homes are filled with net-connected gadgets.
The routers also come with parental control features that help manage how much time children spend online and what they see.