https://www.techdirt.com/articles/20180204/12595039153/nsa-exploit-now-powering-cryptocurrency-mining-malware.shtml

You may have been asked if you'd like to try your hand at mining cryptocurrency. You may have demurred, citing the shortage in graphics cards or perhaps wary you were being coaxed into an elaborate Ponzi scheme. So much for opting out. Thanks to the NSA, you may be involved in mining cryptocurrency, but you're likely not seeing any of the benefits.

A computer security exploit developed by the US National Security Agency and leaked by hackers last year is now being used to mine cryptocurrency, and according to cybersecurity experts the number of infections is rising.