The mining code would reportedly drain up to 80 percent of viewers’ CPU power, a process which was enabled by either watching or clicking a specific YouTube advert link. This issue was identified last week when users reported their antivirus programmes detecting covert mining whilst watching YouTube adverts.
On Sunday, cyber-security research company, Trend Micro, published a blog post revealing a 285 percent increase in the number of CoinHive miners on Wednesday, January 24. They traced the activity to five domains, one of which was a subsidiary company owned by Google, called DoubleClick Advertisement. The cryptocurrency mining occurred in several countries, according to Trend Micro, which includes France, Italy, Spain, Japan, and Taiwan.
“Mining cryptocurrency through ads is a relatively new form of abuse that violates our policies and one that we’ve been monitoring actively,” said Google in a statement.