MovieSearchHome is not something you want to have on your browser. It is an extension or a potentially unwanted program installed in your system that acts as a hijacker. It changes the default homepage, new tab address and implements a fake search engine that is untrustworthy. This creates possibilities for people to fall for scams by visiting dangerous pages by accident. Sponsored links can lead to monetary losses or getting infected with more serious threats.
The hijacker can affect all browsers that have the ability to add extensions to it. Normally, browser extensions are meant to provide some kind of benefits for users, like blocking suspicious links, providing coupons, or blocking advertisements. But this one is not like that. It has some basic abilities that can be found on any browser. It is a desperate attempt to try to look current.