It is estimated that there are at least 1.65 million computers infected to mine cryptocurrencies without their users knowing, but the real plague is the web pages that use your browser to consume your CPU resources in the background. The latest victims are Movistar's customers in Spain.

A user of Forocoches realized this morning that Movistar.es was mining Monero (an alternative to Bitcoin) using a script from the Coinhive platform. Some ran to check it and realized that the web put its CPU at 300% (ie, with three cores working at full capacity). According to the Bad Packets website, specialized in security, the malicious code had been injected through the Google Tag Manager network.