Wildly successful Larry Ellison, and his company Oracle, distribute “crapware”, both on PCs and Mac via their ubiquitous Java. Most notable is the horrific ASK toolbar which becomes your search engine, adds a toolbar and does things with your browser you not be aware of. Not quite a virus or malware it is referred to as a PUP (potentially unwanted program).
Here’s a good article for Mac users on how to get rid of it: http://www.howtogeek.com/212155/java-on-os-x-is-bundling-crapware-heres-how-to-make-it-stop/
Here’s a good article for PC users on how to get rid of it: http://www.howtogeek.com/198240/avoid-javas-ask-toolbar-installations-with-this-one-weird-registry-hack/