“Norwegian browser maker Opera has launched the beta version of Opera 50, the first popular browser to integrate a built-in cryptocurrency-mining blocker,” Liam Tung reports for ZDNet.

“The feature offers a new defense against the rise of cryptojacking or browser-based cryptocurrency miners that use a site visitor’s CPU without gaining the owner’s consent,” Tung reports. “Crooks are increasingly hiding JavaScript miners on compromised websites and some have taken to deploying sneaky pop-under windows to continue using a CPU even after the victim has left the site, while groups using fake tech support scams have started integrating JavaScript miners into their bogus security-warning browser lockscreens. ‘Your CPU suddenly working at 100 percent capacity, the fan is going crazy for seemingly no reason, and your battery quickly depleting might all be signs that someone is using your computer to mine for cryptocurrency,’ said Opera.”

“In the beta at least, the NoCoin option is enabled by default,” Tung reports. “The feature works by blocking cryptocurrency mining scripts.”

Read more in the full article here.

MacDailyNews Take: This is more about mining for Monero cryptocurrency than Bitcoin, but, regardless, have you been hit by cryptojacking?

Persistent drive-by cryptomining coming to a browser near you – Jérôme Segura, Malwarebytes, November 29, 2017