This redirect exploit seems to have resurfaced again.
In the meantime, do this:
Note: All YUI 2.x users should review the YUI 2.8.2 security bulletin, which discusses a vulnerability present in YUI 2.4.0-2.8.1. If you host an a YUI 2.4.0-2.8.1 distribution, you need to take action — review the bulletin for full details.
- Admin CP >> Settings >> Options >> Server Settings and Optimization Options
- Scroll down to Use Remote YUI
- Set this to Google