Cryptojackers have shut down university networks and government websites, but there was one case that attracted a lot of attention, and that is the use of Coinhive mining service focused on mining Monero.
With the closure of Coinhive it appeared that cryptojacking might be coming to an end. Coinhive was a cryptocurrency mining service that relied on a small chunk of computer code installed on websites. It released its mining code in 2017, pitching it as a way for website owners to earn an income without running intrusive or annoying advertisements. However, although Coinhive was not an inherently malicious code, it became popular among hackers for cryptojacking. The more people visited a site, the more processing power was siphoned off to mine Monero.