It seems that Google/Nest are launching an "Internet of Things" full home security system, with an alarm, internet connected video etc: http://www.bbc.co.uk/news/technology-41336093
Sounds an interesting idea, BUT, and it's a big BUT, would I want to trust Google with all that data about our house? Given their track record for what I believe is abuse of personal data, I'm not at all sure I'd want to trust a our home security to such a system. It's bound to become a prime target for hackers, and as a former IT security colleague was very fond of reminding us at any opportunity, you can never be 100% sure that any internet connected system is secure. The same individual was also fond of reminding us that we spent many times more on our network security, per user, than practically any other organisation, and he still couldn't be 100% sure our systems were secure.