Bitcoin hits $11,000 and then plummets. What next?

The bitcoin roller coaster is picking up speed.

The virtual currency powered past $11,000 for the first time on Wednesday, capping a jaw-dropping rally of more than 1,000% since the start of the year. But it then plunged by more than $2,000, providing a stark reminder of its extreme volatility.

Websites use your CPU to mine cryptocurrency even when you close your browser

ITAKU - Websites use your CPU to mine cryptocurrency even when you close your browser

 

Researchers have discovered a new technique that lets hackers and unscrupulous websites perform in-browser, drive-by cryptomining even after a user has closed the window for the offending site.