Chumsearch.com is a malware, that may be installed without your knowledge. Chumsearch.com is able to change your homepage and search engine without any permission. That’s why these kind of applications are called browser hijacker, because of shady ways of distribution. Important fact – this malware is able to infect both Windows and Mac users, that’s why you may find instructions for both.
Free Forms is a malicious application, that PC security experts mark as an adware. It is developed by 215 Apps that publish many other adware programs. This extension is able to spoil your work with intrusive advertisement and pop-up on all the websites you visit, corrupting your internet surfing. Main purpose of such programs is to generate a revenue on the advertisement that is sponsored by third-party companies.