Lessons from the Internet of Things – Do you Trust Your Fridge?
The ‘Internet of Things’ is one of the most discussed topics on technical forums at the moment. The idea that you can enable all sorts of devices with a network card and a bit of memory to attach it online obviously has many benefits. It reminds me of the excitement of the ‘Trojan Room Coffee Machine which was a live video stream of a coffee machine hooked up in Cambridge University, via MPLS and an Acorn Archimedes (remember them!) in 1993. Sure it was just a coffee machine, certainly the picture rarely changed – it was either full, empty or half empty – but the realisation that you could check on it in real time without leaving your chair was kind of exciting at the time. The web cam was switched off in 2001, but many of us can still recall checking that the geeks in Cambridge had enough coffee.
Nowadays of course, our devices are increasingly network aware, printers were of course, the logical first piece of equipment to stick online, it saved having them hooked up to computers and people could use them remotely. However it didn’t take long for hackers to target the first network enabled printers to infiltrate networks, distribute malware or just muck about by sending huge print jobs to them.
A story has broken this week in the security press which adds a strange twist with the first reported Spam attack by a fridge. The report released by the security firm, Proofpoint claims that a fridge took part in sending 750,000 email messages in a wide bot enabled Spam attack. It’s actually a little late as there have been similar reports as early as 2013 of this new vocation of our kitchen appliances, however it’s still rather disturbing.
Many of us, will perhaps question the need for kitchen appliances to have access to the internet. I for one can happily live without my fridge tweeting me that I’m out of milk, in fact being nagged by my fridge doesn’t appeal at all!! Manufacturers will point to the fact that internet access will provide a host of other benefits like fault finding and notifying manufacturer of potential problems. Again, the old school method of the fridge simply stopping working seems more than adequate. Imagine getting a call from a Samsung customer representative who has just been notified that your fridge light is not working by your erm fridge. It’s an internet horror story and the benefits negligible at best and in reality pretty much pointless.
Enabling these devices means there’s another headache you are responsible for, you’ll need to configure your fridge to connect, ensure it’s got a strong password and it’s behaving itself online. How do you connect to your fridge, could you compromise other logins, should you use a VPN to connect? Coming down in the morning and finding your fridge cornered by the FBI might seem far fetched but it’s not as ridiculous as it might seem. Using these devices in botnets to attack other machines, send out spam or as proxies to attack other machines is perfectly feasible and it’s actually happening now.
Network security on these enabled devices is normally an after thought, it’s often much easier to hack into a network enabled device than a laptop or computer. For example how many people would log onto their fridge after purchase to change the default password – but if you’ve bought a fancy internet enabled smart fridge it’s something you really should do. Already hackers have demonstrated how to to steal your google login from a Samsung fridge, at this years DefCon conference. The fridge ran a flawed implementation of SSL which failed to check false certificates making it vulnerable to MiTM attacks.
This ‘internet of things’ basically sounds like a huge pain, introducing fairly pointless benefits at the cost of loads of hassle and vulnerabilities. Of course for things like printers and using my Smart TV to access online entertainment then it makes sense. However I for one will not be upgrading my fridge anytime soon.