I did some reading on the so-called 'Fireball' malware. Is this a serious threat or just rumours?

Question

So I read e.g. this article 
 
 https://www.infosecurity-magazine.com/news/fireball-infects-20-of-corporate/

FormerMember · Accepted Answer

It's serious! 
 
 Here is a link to check Point's page, who have discovered the malware: 
 http://blog.checkpoint.com/2017/06/01/fireball-chinese-malware-250-million-infection/ 
 
 Regards Meghan