Bitcoin specific Trojan virus labeled #1 cyber threat in world

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Cyber criminals could be raking in millions of dollars using a Bitcoin-mining botnet called ZeroAccess, according to newly released data from network security company Fortinet.

The company found that ZeroAccess -- also used for click fraud -- was the No. 1 security threat during the first quarter of this year.

New ZeroAccess infections have steadily grown since the beginning of the year, according to FortiGuard Labs, which has monitored the malware since last August. Most recently, researchers witnessed a whopping 100,000 new infections per week and almost 3 million unique IP addresses reporting infections.

In the past 90 days alone. The owners of ZeroAccess have sent their infected hosts 20 software updates, according to Richard Henderson, security strategist and threat researcher for Fortinet's FortiGuard Labs.

Henderson said that as Bitcoin's popularity and value increases, more botnet owners will likely attempt to use their botnets to turn target devices into zombie miners or to disrupt the Bitcoin market.

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