PUP.Optional.WinYahoo is Malwarebytes’ detection name for a potentially unwanted program (PUP) that performs changes on the most popular browsers that are installed on affected systems. Specifically, it modifies the user’s default home, start, and search pages for their Chrome, Firefox, Internet Explorer, and Safari browsers. This PUP also performs redirects to unwanted sites. Furthermore, it installs browser extensions / add-ons / plug-ins.
Malwarebytes protects users from PUP.Optional.WinYahoo by using real-time protection.
Malwarebytes can detect and remove PUP.Optional.WinYahoo without further user interaction.
Should users wish to keep this program and exclude it from being detected in future scans, they can add the program to the exclusions list. Here’s how to do it.
If you want to allow the program to connect to the Internet, for example to fetch updates, also add an exclusion of the type Allow an application to connect to the internet and use the Browse button to select the file you wish to grant access.