Kernel - antivirus designer issues

 Since  it is so dangerous, why would designers install software into the kernel at all (or make use of kernel software)? If you were an antivirus  designer or maker, what other methods do you utilize to prevent virus?
Answer  the questions with an APA-formatted paper (Title page, body and  references only), in-text citation.  Response should have a minimum of 500 words. A minimum of two references are required.