GOOGLEはChrome 仮想通貨のマイニングを行なう拡張機能を禁止すると発表しました。
As the extensions ecosystem continues to evolve, we remain focused on empowering developers to build innovative experiences while keeping our users as safe as possible. Over the past few months, there has been a rise in malicious extensions that appear to provide useful functionality on the surface, while embedding hidden cryptocurrency mining scripts that run in the background without the user’s consent. These mining scripts often consume significant CPU resources, and can severely impact system performance and power consumption.
The chart above shows a recent example of CPU overutilization from hidden coin mining in an extension.
Until now, Chrome Web Store policy has permitted cryptocurrency mining in extensions as long as it is the extension’s single purpose, and the user is adequately informed about the mining behavior. Unfortunately, approximately 90% of all extensions with mining scripts that developers have attempted to upload to Chrome Web Store have failed to comply with these policies, and have been either rejected or removed from the store.
Starting today, Chrome Web Store will no longer accept extensions that mine cryptocurrency. Existing extensions that mine cryptocurrency will be delisted from the Chrome Web Store in late June. Extensions with blockchain-related purposes other than mining will continue to be permitted in the Web Store.
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. 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.
Posted by James Wagner, Extensions Platform Product Manager
参照元：Protecting users from extension cryptojacking
仮想通貨のマイニングを行なう拡張機能があるという事を知りませんでした。
拡張機能以外にもWEBサイトでページを閲覧するだけでマイニングを行うscriptやツールが色々あります。
但し、それを使用するサイトはユーザーに通知しなければ知らないうちにPCの負荷があがります。
そのようなやり方はマナー違反で通用しないでしょう。
拡張機能は簡単にインストールできます。
インストールしてしまえば、知らないうちにCPUの負荷が高まり「何でPCの負荷が高いんだ」となるでしょう。
仮想通貨のマイニングを行なう拡張機能を削除は早く実施してほしいです。
マイニングはPCやサーバー、委託して行えのですから。
