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Microsoft has been able to block more than 400,000 attempts of cryptojacking in just 12 hours. The information has been released by Microsoft on a blog post on March 7 in which they explain how the events occurred.

Microsoft Cryptojacking Defence

Microsoft’s Windows Defender Antivirus was able to block an important amount of attacks that took place on March the 6th. At the beginning the antivirus was able to block more than 80,000 instances of trojans that exhibited advanced cross-process injection techniques.



What is impressive is that later, in the next 12 hours, more than 400,000 instances were recorded. 73% of them were in Russia and Turkey accounted for 18%, followed by Ukraine with 4%. According to the company, users of Windows 10, Windows 8.1 and Windows 7, that run the Windows defender AV or Microsoft Security Essentials are protected from the outbreak.

As reported by Microsoft, Dofoil is the latest malware family that has incorporated coin miners in attacks. These hackers take profit by mining cryptocurrencies from the computer of the user affected. As cryptocurrencies have increased in value in the last months, mining activities are attracting several crypto enthusiasts, and hackers.

CryptoJacking Attacks

In the past, we have covered how cryptocurrency attackers were exploiting Coinhive software to mine cryptocurrencies. During the last weeks of January, Cryptocurrency hackers infected YouTube and 55% of different Businesses worldwide.

When users were watching videos in the platform, the program was running hidden in the background stealing energy from the user’s computer to mine cryptocurrencies. The situation affected an important amount of important webpages all over the world.

As anti viruses were detecting strange activities in YouTube, the company was able to solve the situation in just some hours.

Troy Mursch, an independent security researcher commented:

“YouTube was likely targeted because users are typically on the site for an extended period of time. This is a prime target for cryptojacking malware, because the longer the users are mining for cryptocurrency, the more money is made.”

There are different solutions for this problem and how to avoid it. For example, Opera and its desktop browser automatically block these attempts to mine cryptocurrencies. Google Chrome and Firefox are using an ad block that can be instilled in the browser.

Krystian Kolondra, head of Desktop Browser Opera said:

“We are fans of cryptocurrencies, but we simply don’t accept that websites are using people’s computers to mine coins without their knowledge of consent. With the new Opera 50, we want to kick off 2018 by providing people a simple way to regain control of their computers.”

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