ZigBee has many methods for making sure that the network is kept secure. It has 128-bit AES link encryption, making it virtually impossible to casually listen in to any exchange. It also uses encrypted key exchange for commissioning of new devices and frame counters to avoid replaying of messages (“to open the door again”). ZigBee has learned a lot from WiFi and probably the best news is that the ZigBee Alliance has a system in place to stay alert to emerging issues and to address new and “out of the box” ways to compromise security of a Smart Home system.
To put things in perspective: “ultimate security” will be ultimately cumbersome for the user. There is always a balance between (cost of) security and user friendliness. It is also important to understand that the technology that is secure today may not be secure tomorrow. Over the last 10 years, WiFi went through several iterations of upgrading its security. The current level of security is sure to not be the final one either, as new ways of attack and more powerful computers will continue to find holes in the latest security protocol. And then of course there is the end-user, usually the weakest link in the chain: forgetting to lock the door or losing the key of the safe will compromise the security.
via WiFiNovation | Scoop.it More READ
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