The Semptum.com Browser Redirect is a computer infection that utilizes the semptum.com to redirect your browser to one of 5 different homepages. When you are infected with this redirector and open a web browser, it will first connect to http://semptum.com/extsearch, which will then randomly select one of the following web sites to redirect you to.
Article Link: https://www.bleepingcomputer.com/virus-removal/remove-the-septum.com-redirect