It profiles users then serves them malicious ads, but I don't know if this kind of specific user-targeting is any different than mainstream malvertising. At least using an ad blocker or privacy-aware browser, as the article suggests, is an easy enough and cost effective (typically free) defense against this threat.
An interesting overview of Candiru who Insanet is reportedly teamed up with. Seems to be a bit more than just malvertising. https://en.wikipedia.org/wiki/Candiru_(spyware_company)
