Q: how to get rid of yahoo that pups up when I open safari

1. Safari > Preferences > Extensions

    Turn all extension off, relaunch Safari and test.

    Turn those on one by one and test.

2. Safari > Preferences >  Search > Search Engine :

    Select your preferred   search engine.

3. Use  free Malwarebytes Anti-Malware for Mac/ AdwareMedic to remove adware

     http://www.adwaremedic.com/index.php

   Download, install , open,  and run it by clicking “Scan for Adware” button   to remove adware.

   Once done, quit Malwarebytes Anti-Malware.

             or

   Remove the adware manually by following the “HowTo” from Apple.

   http://support.apple.com/en-us/HT203987

Note: Malwarebytes Anti-Malware for Mac/ AdwareMedic is recommended by Apple support.

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