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I have no problem with enabling such features on cookers and cameras so long as they are done correctly. i.e. changing password defaults, firewalling it off to restrict to the internal network or NATing and defining the whitelist whom/whatever requires access, keepnig firmware up to date, etc, etc, etc......
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Things which no average punter will even consider, hence the issue.
If it's not secured by taking it out of its box and plugging it in, we're doomed.
It's funny you say that and after following recent discussions in various forums I feel that future litigation, or the prospect of, could shape IOT security posture going forward. Imagine Mr X buys a wireless camera and, due to poor security, it is used by hackers in a DDoS attack against victim Y along with thousands of other devices from the same manufacturer. Victim Y pays for an investigation and discovers all the devices used, then sues the owner of each one. They in turn investigate and argue the manufacturers were negligent in shipping them with dodgy firmware, backdoors, etc and in turn sue the makers through class action. We could end up in a scenario whereby iot products will have an official shelf-life after which your insurance company will no longer cover you in the event a litigation lawyer turns up asking for some wonga in damages.
Such a scenario has the potential for some interesting developments in the near future.