Opera has introduced its anti-cryptocurrency mining feature from its desktop to mobile browsers on Android and iOS platforms. The effect of running cryptocurrency mining scripts leads to smartphones running warm, becoming slower and eating up the battery.
With cryptocurrencies like Bitcoin becoming popular among the masses, some web-developers have resorted to using people's computers and smartphones for mining new coins instead of dedicated data centres. Reports suggest that that are more than 3 million websites exposed to crypto jacking, and a 'single webpage can take up to 4.5 hours of battery time,' according to Jan Standal, VP Product Marketing at Opera.
The anti-mining feature is enabled by default when activating the adblocker on Opera Mini and Opera for Android. The ad-blocker can be enabled in 'Settings', and will automatically detect and prevent the mining scripts from executing when a user stumbles across such a page.
To check if a browser is vulnerable to cryptocurrency mining, Opera has created a website
"After several tests of the Opera browsers for smartphones performed on Samsung Galaxy S8 and HTC One, developers at Opera determined that scripts mining for cryptocurrencies can increase the smartphones’ CPU usage up to 100 percent. This can cause increased battery draining and make the phone overheat."
Opera Mini is available on Google Play and App Store. Opera For Android is available for download on Google Play.