HELSINKI: The humble toaster could become a security threat in the future due to the virtual currency Bitcoin.
For the uninitiated, Bitcoins are a cryptography-based digital currency, which allows users to send and receive money with a degree of anonymity without using traditional commerce networks, in effect cutting out middlemen such as banks. Many governments are also wary of their use as Bitcoin value is determined separately from them. Their uptake has rocketed over the past few years.
While hanging out in Helsinki with F-Secure, the firm's chief research officer Mikko Hypponen, never one to mince his words, said that the increasing value of Bitcoins is enticing criminal gangs to rework traditional malware targeting businesses to turn infected machines into Bitcoin mines.
Bitcoin mining refers to the way Bitcoins are actually earned. In a normal situation, a user runs an algorithm on their computer to authenticate transactions on the Bitcoin platform. This is legal and the person running the process is rewarded with Bitcoins for their trouble. However, turning hoards of machines into your own army to generate huge numbers of Bitcoins is not. As such the crooks love it, as Hypponen explained.
"Bitcoins have been skyrocketing in value. At the moment the value per Bitcoin is currently $134. As this started happening and people started realising there's actual money in Bitcoin, people started mining them pretty seriously," he said.
"A big deal about crypto currency [such as Bitcoin] is the mining part. You can actually use other computers to mine and because of this, botnet-based mining is becoming a real problem. About a year ago we spotted a botnet not spreading malware or phishing, it was just mining bitcoins."
Hypponen went on to explain that Bitcoins' financial allure has already made established cyber criminals rethink their strategies and adapt some of the biggest, most dangerous botnets in the world to mine Bitcoins.
"ZeroAccess used to monetise itself with click fraud. They got on the machine and made it click on adverts to earn money. They changed their tactic in spring and went fully into Bitcoin mining. Some of our estimates suggest it is earning $58,000 a day. That's real money and something they will want to move to the real world," he said.
This is where the toaster idea comes in. Hypponen added that many of the gangs are so enthralled by Bitcoin's potential they've started experimenting with the idea of turning non-traditional devices into mines.
"[When mining Bitcoins] the user is irrelevant, it's the GPU, the computer and the network connection they need. This is especially interesting when you look at automation. I have a pebble watch, it has a GPU, it could mine Bitcoins, so does my fridge and my toaster – these are going to be used to mine Bitcoins," he said.
"We accepted toasters would eventually have computers, but didn't think it would be a problem – who would want to write malware for a toaster right? Well now they have a reason."
This may be a far-fetched example of how far the threat could go, but as recent hacks of IP-based lightbulbs have shown, the home of the future could be open to all kinds of attacks, even burnt toast.
http://www.v3.co.uk/v3-uk/the-frontline-blog/2296670/hackers-could-turn-toasters-into-bitcoin-mines-as-value-rockets 
