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Police to Lay Charges in Japan’s First “CryptoJacking” Case


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Police in Japan have decided to charge three individuals for infecting computers of unsuspecting individuals with software that mines privacy cryptocurrency Monero.

The Japanese daily news provider Mainichi reports that the three individuals are accused of setting up web sites designed to attract and then surreptitiously infect visitor’s computers with a Monero-mining software called Coinhive.

Although Coinhive networks are used to mine Monero consensually for charities like UNICEF and Bail Bloc, the software may be being widely deployed without affected computers’ permission.

Malicious Coinhive infections engage infected computers’ CPUs (Central Processing Units) to mine Monero coins and sends them to culprits.

Cryptocurrency mining is an energy-intensive process that consumes a lot of power. Victims of cryptojacking may experience reduced computer performance and damage and must pay resulting electricity bills.

Maniachi reports that;

“Computer security companies such as Trend Micro have warned users about Coinhive…The company detected 181,376 terminals running mining software from January through March 2018 in Japan, marking an explosive increase from 767 in the same period a year ago.”

Although regular computers can only mine a little crypto at a time, if that, numerous infected computers may generate a lot of Monero as part of a network.

The police are hoping to use anti-computer virus laws to charge the three accused, who reside in Kanazawa, Chiba, and Tochigi in central Japan.

One suspect is a web designer and another was previously ordered to pay 100 000 yen for “illegally storing a computer virus.”

Coinhive v. Conhive

That defendant has claimed that “cryptojacking” using Coinhive does not involve a virus, and rather uses a method similar to ad scripts that pop up when people visit particular sites, which are used to bring ad revenue to those sites.

“Following a search for hotels, internet users often see hotel ads even when they are visiting websites not related to accommodation because view records are used for ad distribution,” writes Maniachi.

But police have apparently made a distinction between pop-ups and Coinhive used as malware: people can see ads and use ad blockers, but are not made aware of the presence of Coinhive on their computers.


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