Starting today, no crypto-mining extensions will be accepted by the Chrome Web Store and those already in the store will be removed in late June. "The extensions platform provides powerful capabilities that have enabled our developer community to build a vibrant catalog of extensions that help users get the most out of Chrome," Google said. "Unfortunately, these same capabilities have attracted malicious software developers who attempt to abuse the platform at the expense of users. This policy is another step forward in ensuring that Chrome users can enjoy the benefits of extensions without exposing themselves to hidden risks."

Cryptocurrency mining has become a popular strategy for raising funds. There have been a number of instances of cryptojacking, which companies like Tesla and Showtime, governments and Android phones have fallen prey to. Earlier this year, Salon began giving readers the option of turning off their ad blockers or letting the site mine cryptocurrency with their computer's processing power. In January, an updated version of Opera gave users the option of blocking cryptocurrency mining scripts through its ad-blocking software.