Check Point’s researchers detected a near-400% increase in crypto-mining malware attacks against iPhones. The surge was seen in the last two weeks of September, when attacks against users of the Safari browser also rose significantly. These attacks used the Coinhive mining malware, which has been at the number one position in the Index since December 2017, having emerged one year ago in September 2017.

https://blog.checkpoint.com/2018/10/15/september-2018s-most-wanted-malware-cryptomining-attacks-against-apple-devices-on-the-rise/