The implementation may be mostly stupidity/laziness as they probably just used Komodia's ad injection SDK: http://www.komodia.com/ad-injection-sdk/ http://www.

The implementation may be mostly stupidity/laziness as they probably just used Komodia's ad injection SDK: http://www.komodia.com/ad-injection-sdk/ http://www.komodia.com/ad-injection-sdk/ But if you look at what Komodia says on that page regarding anti-virus: "The SDK has anti virus capabilities and each compiled version generates a totally new version." it's pretty clear they know this is something that most people would consider to be malware rather than just run of the mill adware. So the blatant disregard for users appears pretty malicious.