When we say devices, we mean all devices with a processor, including low power devices like tablets and cell phones. If you know anything about cryptomining takes an enormous amount of processing power and so you would think that cell phones and tablets would not have enough ‘power’ to bother with. While that is true, it is also true that there are billions of such devices. Research firm Wondera reported that the number of cryptojacking attacks on mobile devices increase 287% between October and November 2017.
Cryptojackers will ideally steal compute cycles from high end Graphics Processing Units (GPU’s) from gamer machines, but they are few and far between. After GPU’s they will try to steal compute cycles on regular PC’s and servers. Cellphones and Tablets are at the bottom of the barrel but so many of them are unprotected, they are still attractive and useful to Cryptojackers.
The very best platform for a Cryptojacker is “cloud” computers. Remember that the “cloud” is just someone else’s computer, but usually the clouds are made up of thousands and thousands of computers. If a hacker can get into your Bitcoin trading platform or Amazon Web Services (AWS) or Microsoft Azure or Google Cloud, and install some cryptocurrency mining software, they have hit the jackpot:
You have heard that Crypto-currency valuations have gone up to very high levels ($2000 for single Bit-Coin) and so you might think that the miners would just buy equipment and run their own mining operation. However, crypto-mining gets more complex every time a new “coin” is issued which means cryptominers need ever increasing amounts of compute power to decrypt new ‘coins’. That means 2017 saw a run on mid and high end graphics cards which resulted in a world-wide shortage that is expected to continue through at least the first half of 2018 and that caused the prices of those graphics cards to skyrocket. Also, the profitability of such mining has taken another hit because it takes an ever increasing amount of processing power, which also translates into ever increasing use of electricity and cooling which also cost money. So even if bitcoin miners wanted to mine legitimately, it would be difficult to be profitable.
You can get your devices Cryptojacked just like any other malware attack and you can protect yourself in the usual ways
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Cryptojacking mobile devices is just ridiculous. It actually takes the whole meaning of "ridiculous" to a whole new level. You'll need tens or maybe even hundreds of mobile devices to get the results of one GTX 1080.