You are absolutely right Sylvie. With Millions/Billions of devices hanging off the "universal neural net", the potential security issues can be disastrous….…. No one likes to see something benign like their home electricity hacked. Imagine what can happen to larger mission critical infrastructures if they become the target. Security for IoT is perhaps the most aspect of the whole thing.
How long will it be before “We” become part of the “Internet of Things”? As soon as everything about you is able to be tracked, you will not be allowed to be without your connected device. To make sure that doesn’t happen the device will be embedded in you at birth and constantly transmit data about you. Not long after that the data will become bidirectional instructing you how to best serve the collective. Resistance is futile.
Not so sure about the security angle, Sylvie. Like Helen Keller said "Security is an illusion." It will never be absolute unless humanity suddenly becomes universally sinless.
The real issue of the IoT is the management of data. Current search is based on words and phrases, primarily, but it is constantly being gamed by the SEO industry. We need a software approach that institutes an automated omniscience, more than just artificial intelligence, that brings the right information to the devices when requested. There's a lot of stuff we need to know but it comes to us in semi-truck loads, rather than in appropriate amounts. when someone figures that out, the IoT will take off.