Opera just added a Bitcoin-mining blocker to its browser, ZDNet

Ultimately, a browser is doing something to protect users from drive-by crypto-miners.

By Liam Tung | December 22, 2018 — 13:24 GMT (05:24 PST) | Topic: Security

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Norwegian browser maker Opera has launched the beta version of Opera 50, the very first popular browser to integrate a built-in cryptocurrency-mining blocker.

The feature offers a fresh defense against the rise of cryptojacking or browser-based cryptocurrency miners that use a webpagina visitor’s CPU without gaining the possessor’s consent.

Crooks are increasingly hiding JavaScript miners on compromised websites and some have taken to deploying sneaky pop-under windows to proceed using a CPU even after the victim has left the webpagina, while groups using fake tech support scams have embarked integrating JavaScript miners into their bogus security-warning browser lockscreens.

“Your CPU abruptly working at 100 procent capacity, the fan is going crazy for seemingly no reason, and your battery quickly depleting might all be signs that someone is using your rekentuig to mine for cryptocurrency,” said Opera.

NoCoin blocks in-browser cryptominers

Photo: Liam Tung/ZDNet

Opera’s cryptocurrency mining protection is part of Opera’s built-in ad blocker. The company has attempted to differentiate itself with a range of novel features, such spil the ad-blocker and a built-in VPN.

To enable the mining protection, users need to go to Settings or Preferences. The NoCoin (Cryptocurrency) setting can be found ter Recommended lists of ad filters te the Block ads pagina.

“With NoCoin turned on, pages embedded with cryptocurrency mining scripts will be blocked ter a similar way our mechanism blocks ads,” said Opera desktop QA Kornelia Mielczarczyk.

Ter the beta at least, the NoCoin option is enabled by default. The feature works by blocking cryptocurrency mining scripts.

Related coverage

Expect to see more miners silently chewing up CPU resources through your browser.

Stealthy and persistent cryptocurrency-mining malware is hitting Windows machines.

Your PC may be used to find cryptocurrency when you visit websites, with or without your consent.

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